140042302431 has 4 divisors (see below), whose sum is σ = 186723069912. Its totient is φ = 93361534952.

The previous prime is 140042302397. The next prime is 140042302451. The reversal of 140042302431 is 134203240041.

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

It is a cyclic number.

It is not a de Polignac number, because 140042302431 - 2¹⁰ = 140042301407 is a prime.

It is a super-2 number, since 2×140042302431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140042302451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23340383736 + ... + 23340383741.

It is an arithmetic number, because the mean of its divisors is an integer number (46680767478).

Almost surely, 2^140042302431 is an apocalyptic number.

140042302431 is a deficient number, since it is larger than the sum of its proper divisors (46680767481).

140042302431 is an equidigital number, since it uses as much as digits as its factorization.

140042302431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46680767480.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 140042302431 its reverse (134203240041), we get a palindrome (274245542472).

The spelling of 140042302431 in words is "one hundred forty billion, forty-two million, three hundred two thousand, four hundred thirty-one".