40740531 has 8 divisors (see below), whose sum is σ = 58499280. Its totient is φ = 25071072.

The previous prime is 40740527. The next prime is 40740533. The reversal of 40740531 is 13504704.

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

It is not a de Polignac number, because 40740531 - 2² = 40740527 is a prime.

It is a super-2 number, since 2×40740531² = 3319581732323922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40740533) 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, 522276 + ... + 522353.

It is an arithmetic number, because the mean of its divisors is an integer number (7312410).

Almost surely, 2^40740531 is an apocalyptic number.

40740531 is a deficient number, since it is larger than the sum of its proper divisors (17758749).

40740531 is a wasteful number, since it uses less digits than its factorization.

40740531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044645.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 40740531 is about 6382.8309549917. The cubic root of 40740531 is about 344.0927813327.

Subtracting from 40740531 its product of nonzero digits (1680), we obtain a triangular number (40738851 = T₉₀₂₆).

The spelling of 40740531 in words is "forty million, seven hundred forty thousand, five hundred thirty-one".