140426623021 has 4 divisors (see below), whose sum is σ = 140462459200. Its totient is φ = 140390786844.

The previous prime is 140426622989. The next prime is 140426623033. The reversal of 140426623021 is 120326624041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120326624041 = 13 ⋅9255894157.

It is a cyclic number.

It is not a de Polignac number, because 140426623021 - 2⁵ = 140426622989 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 (140426623061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17912211 + ... + 17920048.

It is an arithmetic number, because the mean of its divisors is an integer number (35115614800).

Almost surely, 2^140426623021 is an apocalyptic number.

It is an amenable number.

140426623021 is a deficient number, since it is larger than the sum of its proper divisors (35836179).

140426623021 is an equidigital number, since it uses as much as digits as its factorization.

140426623021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35836178.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 140426623021 in words is "one hundred forty billion, four hundred twenty-six million, six hundred twenty-three thousand, twenty-one".