240142426431 has 4 divisors (see below), whose sum is σ = 320189901912. Its totient is φ = 160094950952.

The previous prime is 240142426427. The next prime is 240142426439. The reversal of 240142426431 is 134624241042.

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 240142426431 - 2² = 240142426427 is a prime.

It is a super-2 number, since 2×240142426431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240142426392 and 240142426401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240142426439) 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, 40023737736 + ... + 40023737741.

It is an arithmetic number, because the mean of its divisors is an integer number (80047475478).

Almost surely, 2^240142426431 is an apocalyptic number.

240142426431 is a deficient number, since it is larger than the sum of its proper divisors (80047475481).

240142426431 is an equidigital number, since it uses as much as digits as its factorization.

240142426431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80047475480.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 240142426431 its reverse (134624241042), we get a palindrome (374766667473).

The spelling of 240142426431 in words is "two hundred forty billion, one hundred forty-two million, four hundred twenty-six thousand, four hundred thirty-one".