40129092 has 18 divisors (see below), whose sum is σ = 101437518. Its totient is φ = 13376352.

The previous prime is 40129087. The next prime is 40129093. The reversal of 40129092 is 29092104.

It can be written as a sum of positive squares in only one way, i.e., 23677956 + 16451136 = 4866^2 + 4056^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×40129092² = 3220688049488928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40129093) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 557313 + ... + 557384.

Almost surely, 2^40129092 is an apocalyptic number.

It is an amenable number.

40129092 is an abundant number, since it is smaller than the sum of its proper divisors (61308426).

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

40129092 is a wasteful number, since it uses less digits than its factorization.

40129092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114707 (or 1114702 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 40129092 is about 6334.7527181414. The cubic root of 40129092 is about 342.3627012862.

The spelling of 40129092 in words is "forty million, one hundred twenty-nine thousand, ninety-two".