40129292 has 24 divisors (see below), whose sum is σ = 84483840. Its totient is φ = 16292880.

The previous prime is 40129289. The next prime is 40129337. The reversal of 40129292 is 29292104.

It is a super-2 number, since 2×40129292² = 3220720152842528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37184 + ... + 38247.

It is an arithmetic number, because the mean of its divisors is an integer number (3520160).

Almost surely, 2^40129292 is an apocalyptic number.

It is an amenable number.

40129292 is an abundant number, since it is smaller than the sum of its proper divisors (44354548).

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

40129292 is a wasteful number, since it uses less digits than its factorization.

40129292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75461 (or 75459 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 40129292 is about 6334.7685040576. The cubic root of 40129292 is about 342.3632700541.

The spelling of 40129292 in words is "forty million, one hundred twenty-nine thousand, two hundred ninety-two".