140234240431021 has 16 divisors (see below), whose sum is σ = 153695202036480. Its totient is φ = 126892408760320.

The previous prime is 140234240430967. The next prime is 140234240431037. The reversal of 140234240431021 is 120134042432041.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 140234240431021 - 2²⁹ = 140233703560109 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 (140234240432021) 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, 2881381 + ... + 16993258.

It is an arithmetic number, because the mean of its divisors is an integer number (9605950127280).

Almost surely, 2^{140234240431021} is an apocalyptic number.

140234240431021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140234240431021 is a deficient number, since it is larger than the sum of its proper divisors (13460961605459).

140234240431021 is a wasteful number, since it uses less digits than its factorization.

140234240431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19877636.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 140234240431021 its reverse (120134042432041), we get a palindrome (260368282863062).

The spelling of 140234240431021 in words is "one hundred forty trillion, two hundred thirty-four billion, two hundred forty million, four hundred thirty-one thousand, twenty-one".