40420770 has 32 divisors (see below), whose sum is σ = 104473152. Its totient is φ = 9949632.

The previous prime is 40420763. The next prime is 40420777. The reversal of 40420770 is 7702404.

It is an interprime number because it is at equal distance from previous prime (40420763) and next prime (40420777).

It is a self number, because there is not a number n which added to its sum of digits gives 40420770.

It is not an unprimeable number, because it can be changed into a prime (40420777) 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, 51432 + ... + 52211.

It is an arithmetic number, because the mean of its divisors is an integer number (3264786).

Almost surely, 2^40420770 is an apocalyptic number.

40420770 is an abundant number, since it is smaller than the sum of its proper divisors (64052382).

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

40420770 is a wasteful number, since it uses less digits than its factorization.

40420770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103666.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 40420770 is about 6357.7330865647. The cubic root of 40420770 is about 343.1901865528.

The spelling of 40420770 in words is "forty million, four hundred twenty thousand, seven hundred seventy".