40921072 has 10 divisors (see below), whose sum is σ = 79284608. Its totient is φ = 20460528.

The previous prime is 40921061. The next prime is 40921081. The reversal of 40921072 is 27012904.

40921072 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 an unprimeable number.

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 as a sum of consecutive naturals, namely, 1278768 + ... + 1278799.

Almost surely, 2^40921072 is an apocalyptic number.

It is an amenable number.

40921072 is a deficient number, since it is larger than the sum of its proper divisors (38363536).

40921072 is a wasteful number, since it uses less digits than its factorization.

40921072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557575 (or 2557569 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 40921072 is about 6396.9580270626. The cubic root of 40921072 is about 344.6003128833.

Adding to 40921072 its reverse (27012904), we get a palindrome (67933976).

The spelling of 40921072 in words is "forty million, nine hundred twenty-one thousand, seventy-two".