40420572 has 12 divisors (see below), whose sum is σ = 94314696. Its totient is φ = 13473520.

The previous prime is 40420553. The next prime is 40420573. The reversal of 40420572 is 27502404.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40420573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684179 + ... + 1684202.

It is an arithmetic number, because the mean of its divisors is an integer number (7859558).

Almost surely, 2^40420572 is an apocalyptic number.

It is an amenable number.

40420572 is an abundant number, since it is smaller than the sum of its proper divisors (53894124).

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

40420572 is a wasteful number, since it uses less digits than its factorization.

40420572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368388 (or 3368386 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 40420572 is about 6357.7175149577. The cubic root of 40420572 is about 343.1896261827.

Adding to 40420572 its reverse (27502404), we get a palindrome (67922976).

The spelling of 40420572 in words is "forty million, four hundred twenty thousand, five hundred seventy-two".