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142502454 = 23210497547
BaseRepresentation
bin10000111111001…
…10101000110110
3100221010212121200
420133212220312
5242440034304
622050153330
73350152023
oct1037465066
9327125550
10142502454
1173491226
123b882846
13236a53a3
1414cd654a
15c79ce39
hex87e6a36

142502454 has 24 divisors (see below), whose sum is σ = 309090600. Its totient is φ = 47449248.

The previous prime is 142502453. The next prime is 142502461. The reversal of 142502454 is 454205241.

142502454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×1425024544 (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142502453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15109 + ... + 22655.

It is an arithmetic number, because the mean of its divisors is an integer number (12878775).

Almost surely, 2142502454 is an apocalyptic number.

142502454 is an abundant number, since it is smaller than the sum of its proper divisors (166588146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142502454 is a wasteful number, since it uses less digits than its factorization.

142502454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604 (or 8601 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 142502454 is about 11937.4391726199. The cubic root of 142502454 is about 522.3249617053.

Adding to 142502454 its reverse (454205241), we get a palindrome (596707695).

The spelling of 142502454 in words is "one hundred forty-two million, five hundred two thousand, four hundred fifty-four".

Divisors: 1 2 3 6 9 18 1049 2098 3147 6294 7547 9441 15094 18882 22641 45282 67923 135846 7916803 15833606 23750409 47500818 71251227 142502454