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142115124 = 22311842927
BaseRepresentation
bin10000111100010…
…00000100110100
3100220102012022010
420132020010310
5242340140444
622034004220
73343646544
oct1036100464
9326365263
10142115124
1173247218
123b716670
132359acb8
1414c35324
15c7232b9
hex8788134

142115124 has 12 divisors (see below), whose sum is σ = 331601984. Its totient is φ = 47371704.

The previous prime is 142115123. The next prime is 142115161. The reversal of 142115124 is 421511241.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 142115124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142115123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5921452 + ... + 5921475.

Almost surely, 2142115124 is an apocalyptic number.

It is an amenable number.

142115124 is an abundant number, since it is smaller than the sum of its proper divisors (189486860).

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

142115124 is a wasteful number, since it uses less digits than its factorization.

142115124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11842934 (or 11842932 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 142115124 is about 11921.2048048844. The cubic root of 142115124 is about 521.8512957022.

Adding to 142115124 its reverse (421511241), we get a palindrome (563626365).

The spelling of 142115124 in words is "one hundred forty-two million, one hundred fifteen thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 12 11842927 23685854 35528781 47371708 71057562 142115124