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142013223 = 33112172557
BaseRepresentation
bin10000111011011…
…11001100100111
3100220020000112000
420131233030213
5242323410343
622031500343
73343043502
oct1035571447
9326200460
10142013223
1173187700
123b6876b3
13235637c1
1414c0a139
15c702ed3
hex876f327

142013223 has 48 divisors (see below), whose sum is σ = 244954080. Its totient is φ = 80974080.

The previous prime is 142013213. The next prime is 142013227. The reversal of 142013223 is 322310241.

It is not a de Polignac number, because 142013223 - 26 = 142013159 is a prime.

It is a super-3 number, since 3×1420132233 (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142013196 and 142013205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142013227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54261 + ... + 56817.

It is an arithmetic number, because the mean of its divisors is an integer number (5103210).

Almost surely, 2142013223 is an apocalyptic number.

142013223 is a deficient number, since it is larger than the sum of its proper divisors (102940857).

142013223 is a wasteful number, since it uses less digits than its factorization.

142013223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605 (or 2588 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 142013223 is about 11916.9300996523. The cubic root of 142013223 is about 521.7265379651.

Adding to 142013223 its reverse (322310241), we get a palindrome (464323464).

It can be divided in two parts, 14201 and 3223, that added together give a square (17424 = 1322).

The spelling of 142013223 in words is "one hundred forty-two million, thirteen thousand, two hundred twenty-three".

Divisors: 1 3 9 11 17 27 33 51 99 121 153 187 297 363 459 561 1089 1683 2057 2557 3267 5049 6171 7671 18513 23013 28127 43469 55539 69039 84381 130407 253143 309397 391221 478159 759429 928191 1173663 1434477 2784573 4303431 5259749 8353719 12910293 15779247 47337741 142013223