40129204 has 24 divisors (see below), whose sum is σ = 74531520. Its totient is φ = 18864384.

The previous prime is 40129189. The next prime is 40129207. The reversal of 40129204 is 40292104.

It is a super-2 number, since 2×40129204² = 3220706027347232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40129207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732 + ... + 9124.

It is an arithmetic number, because the mean of its divisors is an integer number (3105480).

Almost surely, 2^40129204 is an apocalyptic number.

It is an amenable number.

40129204 is a deficient number, since it is larger than the sum of its proper divisors (34402316).

40129204 is a wasteful number, since it uses less digits than its factorization.

40129204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7479 (or 7477 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 40129204 is about 6334.7615582593. The cubic root of 40129204 is about 342.3630197965.

The spelling of 40129204 in words is "forty million, one hundred twenty-nine thousand, two hundred four".