40024257 has 16 divisors (see below), whose sum is σ = 65681280.
Its totient is φ = 21111552.
The previous prime is 40024247. The next prime is 40024267. The reversal of 40024257 is 75242004.
It is an interprime number because it is at equal distance from previous prime (40024247) and next prime (40024267).
It is not a de Polignac number, because 40024257 - 215 = 39991489 is a prime.
It is a super-2 number, since 2×400242572 = 3203882296804098, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (40024247) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73032 + ... + 73577.
It is an arithmetic number, because the mean of its divisors is an integer number (4105080).
Almost surely, 240024257 is an apocalyptic number.
It is an amenable number.
40024257 is a deficient number, since it is larger than the sum of its proper divisors (25657023).
40024257 is a wasteful number, since it uses less digits than its factorization.
40024257 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 146632.
The product of its (nonzero) digits is 2240, while the sum is 24.
The square root of 40024257 is about 6326.4727139220.
The cubic root of 40024257 is about 342.0643068433.
The spelling of 40024257 in words is "forty million, twenty-four thousand, two hundred fifty-seven".