40204129 has 8 divisors (see below), whose sum is σ = 46925568. Its totient is φ = 33727200.

The previous prime is 40204123. The next prime is 40204139. The reversal of 40204129 is 92140204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40204129 - 2²¹ = 38106977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40204123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60772 + ... + 61429.

It is an arithmetic number, because the mean of its divisors is an integer number (5865696).

Almost surely, 2^40204129 is an apocalyptic number.

It is an amenable number.

40204129 is a deficient number, since it is larger than the sum of its proper divisors (6721439).

40204129 is a wasteful number, since it uses less digits than its factorization.

40204129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122255.

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

The square root of 40204129 is about 6340.6725983921. The cubic root of 40204129 is about 342.5759619817.

The spelling of 40204129 in words is "forty million, two hundred four thousand, one hundred twenty-nine".