40202257 has 8 divisors (see below), whose sum is σ = 41640192. Its totient is φ = 38773200.

The previous prime is 40202243. The next prime is 40202269. The reversal of 40202257 is 75220204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40202257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40203257) 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, 7782 + ... + 11872.

It is an arithmetic number, because the mean of its divisors is an integer number (5205024).

Almost surely, 2^40202257 is an apocalyptic number.

It is an amenable number.

40202257 is a deficient number, since it is larger than the sum of its proper divisors (1437935).

40202257 is a wasteful number, since it uses less digits than its factorization.

40202257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 40202257 is about 6340.5249782648. The cubic root of 40202257 is about 342.5706448483.

The spelling of 40202257 in words is "forty million, two hundred two thousand, two hundred fifty-seven".