40421521542124 has 12 divisors (see below), whose sum is σ = 70742179612048. Its totient is φ = 20209470224400.

The previous prime is 40421521542107. The next prime is 40421521542133. The reversal of 40421521542124 is 42124512512404.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322566192 + ... + 322691479.

Almost surely, 2^{40421521542124} is an apocalyptic number.

It is an amenable number.

40421521542124 is a deficient number, since it is larger than the sum of its proper divisors (30320658069924).

40421521542124 is a wasteful number, since it uses less digits than its factorization.

40421521542124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645273336 (or 645273334 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 37.

The spelling of 40421521542124 in words is "forty trillion, four hundred twenty-one billion, five hundred twenty-one million, five hundred forty-two thousand, one hundred twenty-four".