40241257 has 16 divisors (see below), whose sum is σ = 47485440. Its totient is φ = 33388992.

The previous prime is 40241239. The next prime is 40241263. The reversal of 40241257 is 75214204.

It is not a de Polignac number, because 40241257 - 2²³ = 31852649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40241207) 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, 28623 + ... + 29995.

It is an arithmetic number, because the mean of its divisors is an integer number (2967840).

Almost surely, 2^40241257 is an apocalyptic number.

It is an amenable number.

40241257 is a deficient number, since it is larger than the sum of its proper divisors (7244183).

40241257 is a wasteful number, since it uses less digits than its factorization.

40241257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 40241257 is about 6343.5996878744. The cubic root of 40241257 is about 342.6813843792.

The spelling of 40241257 in words is "forty million, two hundred forty-one thousand, two hundred fifty-seven".