405137142 has 24 divisors (see below), whose sum is σ = 898212744. Its totient is φ = 131904864.

The previous prime is 405137123. The next prime is 405137179. The reversal of 405137142 is 241731504.

405137142 is a `hidden beast` number, since 4 + 0 + 513 + 7 + 142 = 666.

It is a super-2 number, since 2×405137142² = 328272207655856328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260943 + ... + 262490.

It is an arithmetic number, because the mean of its divisors is an integer number (37425531).

Almost surely, 2^405137142 is an apocalyptic number.

405137142 is an abundant number, since it is smaller than the sum of its proper divisors (493075602).

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

405137142 is a wasteful number, since it uses less digits than its factorization.

405137142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523484 (or 523481 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 405137142 is about 20128.0188294824. The cubic root of 405137142 is about 739.9471242959.

Adding to 405137142 its reverse (241731504), we get a palindrome (646868646).

The spelling of 405137142 in words is "four hundred five million, one hundred thirty-seven thousand, one hundred forty-two".