1042312112551 has 4 divisors (see below), whose sum is σ = 1087630030512. Its totient is φ = 996994194592.

The previous prime is 1042312112549. The next prime is 1042312112561. The reversal of 1042312112551 is 1552112132401.

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 1042312112551 - 2¹ = 1042312112549 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 (1042312112561) 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, 22658958946 + ... + 22658958991.

It is an arithmetic number, because the mean of its divisors is an integer number (271907507628).

Almost surely, 2^{1042312112551} is an apocalyptic number.

1042312112551 is a deficient number, since it is larger than the sum of its proper divisors (45317917961).

1042312112551 is an equidigital number, since it uses as much as digits as its factorization.

1042312112551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45317917960.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 1042312112551 its reverse (1552112132401), we get a palindrome (2594424244952).

The spelling of 1042312112551 in words is "one trillion, forty-two billion, three hundred twelve million, one hundred twelve thousand, five hundred fifty-one".