140043402000421 has 16 divisors (see below), whose sum is σ = 141396341086000. Its totient is φ = 138697961472000.

The previous prime is 140043402000413. The next prime is 140043402000427. The reversal of 140043402000421 is 124000204340041.

It can be written as a sum of positive squares in 8 ways, for example, as 18448430625 + 140024953569796 = 135825^2 + 11833214^2 .

It is a cyclic number.

It is not a de Polignac number, because 140043402000421 - 2³ = 140043402000413 is a prime.

It is a super-2 number, since 2×140043402000421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140043402000427) 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, 42917605 + ... + 46065253.

It is an arithmetic number, because the mean of its divisors is an integer number (8837271317875).

Almost surely, 2^{140043402000421} is an apocalyptic number.

It is an amenable number.

140043402000421 is a deficient number, since it is larger than the sum of its proper divisors (1352939085579).

140043402000421 is a wasteful number, since it uses less digits than its factorization.

140043402000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148840.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 140043402000421 its reverse (124000204340041), we get a palindrome (264043606340462).

The spelling of 140043402000421 in words is "one hundred forty trillion, forty-three billion, four hundred two million, four hundred twenty-one", and thus it is an aban number.