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142215 = 3519499
BaseRepresentation
bin100010101110000111
321020002020
4202232013
514022330
63014223
71131423
oct425607
9236066
10142215
1197937
126a373
134c968
1439b83
152c210
hex22b87

142215 has 16 divisors (see below), whose sum is σ = 240000. Its totient is φ = 71712.

The previous prime is 142211. The next prime is 142217. The reversal of 142215 is 512241.

142215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142215 - 22 = 142211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 142194 and 142203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36 + ... + 534.

It is an arithmetic number, because the mean of its divisors is an integer number (15000).

2142215 is an apocalyptic number.

142215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142215 is a deficient number, since it is larger than the sum of its proper divisors (97785).

142215 is a wasteful number, since it uses less digits than its factorization.

142215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its digits is 80, while the sum is 15.

The square root of 142215 is about 377.1140411069. The cubic root of 142215 is about 52.1973516368.

Adding to 142215 its reverse (512241), we get a palindrome (654456).

The spelling of 142215 in words is "one hundred forty-two thousand, two hundred fifteen".

Divisors: 1 3 5 15 19 57 95 285 499 1497 2495 7485 9481 28443 47405 142215