140432101421 has 4 divisors (see below), whose sum is σ = 140434191612. Its totient is φ = 140430011232.

The previous prime is 140432101409. The next prime is 140432101463. The reversal of 140432101421 is 124101234041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61759705225 + 78672396196 = 248515^2 + 280486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140432101421 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 (140432101321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940850 + ... + 1079843.

It is an arithmetic number, because the mean of its divisors is an integer number (35108547903).

Almost surely, 2^140432101421 is an apocalyptic number.

It is an amenable number.

140432101421 is a deficient number, since it is larger than the sum of its proper divisors (2090191).

140432101421 is an equidigital number, since it uses as much as digits as its factorization.

140432101421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090190.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 140432101421 its reverse (124101234041), we get a palindrome (264533335462).

The spelling of 140432101421 in words is "one hundred forty billion, four hundred thirty-two million, one hundred one thousand, four hundred twenty-one".