40024251 has 12 divisors (see below), whose sum is σ = 57874128. Its totient is φ = 26654544.

The previous prime is 40024247. The next prime is 40024267. The reversal of 40024251 is 15242004.

It is not a de Polignac number, because 40024251 - 2² = 40024247 is a prime.

It is a super-2 number, since 2×40024251² = 3203881336222002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40024151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10021 + ... + 13433.

It is an arithmetic number, because the mean of its divisors is an integer number (4822844).

Almost surely, 2^40024251 is an apocalyptic number.

40024251 is a deficient number, since it is larger than the sum of its proper divisors (17849877).

40024251 is a wasteful number, since it uses less digits than its factorization.

40024251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722 (or 4719 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40024251 is about 6326.4722397241. The cubic root of 40024251 is about 342.0642897504.

Adding to 40024251 its reverse (15242004), we get a palindrome (55266255).

The spelling of 40024251 in words is "forty million, twenty-four thousand, two hundred fifty-one".