40123572 has 12 divisors (see below), whose sum is σ = 93621696. Its totient is φ = 13374520.

The previous prime is 40123529. The next prime is 40123583. The reversal of 40123572 is 27532104.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671804 + ... + 1671827.

It is an arithmetic number, because the mean of its divisors is an integer number (7801808).

Almost surely, 2^40123572 is an apocalyptic number.

It is an amenable number.

40123572 is an abundant number, since it is smaller than the sum of its proper divisors (53498124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40123572 is a wasteful number, since it uses less digits than its factorization.

40123572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343638 (or 3343636 counting only the distinct ones).

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

The square root of 40123572 is about 6334.3170113281. The cubic root of 40123572 is about 342.3470025443.

Adding to 40123572 its reverse (27532104), we get a palindrome (67655676).

The spelling of 40123572 in words is "forty million, one hundred twenty-three thousand, five hundred seventy-two".