42140535352031 has 4 divisors (see below), whose sum is σ = 42140689050792. Its totient is φ = 42140381653272.

The previous prime is 42140535352001. The next prime is 42140535352063. The reversal of 42140535352031 is 13025353504124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42140535352031 is a prime.

It is a super-2 number, since 2×42140535352031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42140535352001) 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, 76437380 + ... + 76986713.

It is an arithmetic number, because the mean of its divisors is an integer number (10535172262698).

Almost surely, 2^{42140535352031} is an apocalyptic number.

42140535352031 is a deficient number, since it is larger than the sum of its proper divisors (153698761).

42140535352031 is a wasteful number, since it uses less digits than its factorization.

42140535352031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153698760.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 42140535352031 its reverse (13025353504124), we get a palindrome (55165888856155).

The spelling of 42140535352031 in words is "forty-two trillion, one hundred forty billion, five hundred thirty-five million, three hundred fifty-two thousand, thirty-one".