40040662420 has 48 divisors (see below), whose sum is σ = 92140973568. Its totient is φ = 14494930560.

The previous prime is 40040662399. The next prime is 40040662421. The reversal of 40040662420 is 2426604004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040662421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359019 + ... + 457138.

It is an arithmetic number, because the mean of its divisors is an integer number (1919603616).

Almost surely, 2^40040662420 is an apocalyptic number.

It is an amenable number.

40040662420 is an abundant number, since it is smaller than the sum of its proper divisors (52100311148).

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

40040662420 is a wasteful number, since it uses less digits than its factorization.

40040662420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816400 (or 816398 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The spelling of 40040662420 in words is "forty billion, forty million, six hundred sixty-two thousand, four hundred twenty".