40921724 has 36 divisors (see below), whose sum is σ = 75792024. Its totient is φ = 19315296.

The previous prime is 40921723. The next prime is 40921729. The reversal of 40921724 is 42712904.

40921724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40921721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610739 + ... + 610805.

It is an arithmetic number, because the mean of its divisors is an integer number (2105334).

Almost surely, 2^40921724 is an apocalyptic number.

It is an amenable number.

40921724 is a deficient number, since it is larger than the sum of its proper divisors (34870300).

40921724 is a wasteful number, since it uses less digits than its factorization.

40921724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 40921724 is about 6397.0089885821. The cubic root of 40921724 is about 344.6021430587.

The spelling of 40921724 in words is "forty million, nine hundred twenty-one thousand, seven hundred twenty-four".