40120632420 has 48 divisors (see below), whose sum is σ = 122550297408. Its totient is φ = 9726213760.

The previous prime is 40120632413. The next prime is 40120632437. The reversal of 40120632420 is 2423602104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30393759 + ... + 30395078.

It is an arithmetic number, because the mean of its divisors is an integer number (2553131196).

Almost surely, 2^40120632420 is an apocalyptic number.

It is an amenable number.

40120632420 is an abundant number, since it is smaller than the sum of its proper divisors (82429664988).

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

40120632420 is a wasteful number, since it uses less digits than its factorization.

40120632420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60788860 (or 60788858 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The spelling of 40120632420 in words is "forty billion, one hundred twenty million, six hundred thirty-two thousand, four hundred twenty".