42031134511 has 4 divisors (see below), whose sum is σ = 42032196432. Its totient is φ = 42030072592.

The previous prime is 42031134493. The next prime is 42031134539. The reversal of 42031134511 is 11543113024.

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 42031134511 - 2²¹ = 42029037359 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 (42031134911) 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, 469195 + ... + 551548.

It is an arithmetic number, because the mean of its divisors is an integer number (10508049108).

Almost surely, 2^42031134511 is an apocalyptic number.

42031134511 is a deficient number, since it is larger than the sum of its proper divisors (1061921).

42031134511 is a wasteful number, since it uses less digits than its factorization.

42031134511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061920.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 42031134511 its reverse (11543113024), we get a palindrome (53574247535).

The spelling of 42031134511 in words is "forty-two billion, thirty-one million, one hundred thirty-four thousand, five hundred eleven".