140400056021 has 8 divisors (see below), whose sum is σ = 142272240000. Its totient is φ = 138530246400.

The previous prime is 140400056009. The next prime is 140400056039. The reversal of 140400056021 is 120650004041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140400056021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140400055021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474380 + ... + 711221.

It is an arithmetic number, because the mean of its divisors is an integer number (17784030000).

Almost surely, 2^140400056021 is an apocalyptic number.

It is an amenable number.

140400056021 is a deficient number, since it is larger than the sum of its proper divisors (1872183979).

140400056021 is a wasteful number, since it uses less digits than its factorization.

140400056021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187179.

The product of its (nonzero) digits is 960, while the sum is 23.

The spelling of 140400056021 in words is "one hundred forty billion, four hundred million, fifty-six thousand, twenty-one".