40041257 has 8 divisors (see below), whose sum is σ = 41520000. Its totient is φ = 38569104.

The previous prime is 40041251. The next prime is 40041263. The reversal of 40041257 is 75214004.

It is an interprime number because it is at equal distance from previous prime (40041251) and next prime (40041263).

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

It is a cyclic number.

It is not a de Polignac number, because 40041257 - 2⁴ = 40041241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40041251) 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, 13088 + ... + 15854.

It is an arithmetic number, because the mean of its divisors is an integer number (5190000).

Almost surely, 2^40041257 is an apocalyptic number.

It is an amenable number.

40041257 is a deficient number, since it is larger than the sum of its proper divisors (1478743).

40041257 is a wasteful number, since it uses less digits than its factorization.

40041257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3295.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 40041257 is about 6327.8161319684. The cubic root of 40041257 is about 342.1127297293.

The spelling of 40041257 in words is "forty million, forty-one thousand, two hundred fifty-seven".