40512542420 has 36 divisors (see below), whose sum is σ = 98966356020. Its totient is φ = 13890014208.

The previous prime is 40512542383. The next prime is 40512542437. The reversal of 40512542420 is 2424521504.

It can be written as a sum of positive squares in 2 ways, for example, as 13304699716 + 27207842704 = 115346^2 + 164948^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20668685 + ... + 20670644.

It is an arithmetic number, because the mean of its divisors is an integer number (2749065445).

Almost surely, 2^40512542420 is an apocalyptic number.

It is an amenable number.

40512542420 is an abundant number, since it is smaller than the sum of its proper divisors (58453813600).

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

40512542420 is a wasteful number, since it uses less digits than its factorization.

40512542420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41339352 (or 41339343 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The spelling of 40512542420 in words is "forty billion, five hundred twelve million, five hundred forty-two thousand, four hundred twenty".