40420502040 has 32 divisors (see below), whose sum is σ = 121261506480. Its totient is φ = 10778800512.

The previous prime is 40420502021. The next prime is 40420502069. The reversal of 40420502040 is 4020502404.

It is a junction number, because it is equal to n+sod(n) for n = 40420501998 and 40420502016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168418639 + ... + 168418878.

Almost surely, 2^40420502040 is an apocalyptic number.

40420502040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40420502040 is an abundant number, since it is smaller than the sum of its proper divisors (80841004440).

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

40420502040 is a wasteful number, since it uses less digits than its factorization.

40420502040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336837531 (or 336837527 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The spelling of 40420502040 in words is "forty billion, four hundred twenty million, five hundred two thousand, forty".