40420660 has 48 divisors (see below), whose sum is σ = 101235456. Its totient is φ = 13254912.

The previous prime is 40420651. The next prime is 40420661. The reversal of 40420660 is 6602404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40420661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3057 + ... + 9496.

It is an arithmetic number, because the mean of its divisors is an integer number (2109072).

Almost surely, 2^40420660 is an apocalyptic number.

It is an amenable number.

40420660 is an abundant number, since it is smaller than the sum of its proper divisors (60814796).

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

40420660 is a wasteful number, since it uses less digits than its factorization.

40420660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12592 (or 12590 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40420660 is about 6357.7244356767. The cubic root of 40420660 is about 343.1898752363.

The spelling of 40420660 in words is "forty million, four hundred twenty thousand, six hundred sixty".