40902001 has 16 divisors (see below), whose sum is σ = 47595520. Its totient is φ = 34428240.

The previous prime is 40901951. The next prime is 40902011. The reversal of 40902001 is 10020904.

It is not a de Polignac number, because 40902001 - 2²¹ = 38804849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40902011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123406 + ... + 123736.

It is an arithmetic number, because the mean of its divisors is an integer number (2974720).

Almost surely, 2^40902001 is an apocalyptic number.

It is an amenable number.

40902001 is a deficient number, since it is larger than the sum of its proper divisors (6693519).

40902001 is a wasteful number, since it uses less digits than its factorization.

40902001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 40902001 is about 6395.4672229635. The cubic root of 40902001 is about 344.5467716519.

Adding to 40902001 its reverse (10020904), we get a palindrome (50922905).

The spelling of 40902001 in words is "forty million, nine hundred two thousand, one".