1321442142 has 32 divisors (see below), whose sum is σ = 2666912640. Its totient is φ = 436488480.

The previous prime is 1321442123. The next prime is 1321442179. The reversal of 1321442142 is 2412441231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575148 + ... + 577440.

It is an arithmetic number, because the mean of its divisors is an integer number (83341020).

Almost surely, 2^1321442142 is an apocalyptic number.

1321442142 is an abundant number, since it is smaller than the sum of its proper divisors (1345470498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321442142 is a wasteful number, since it uses less digits than its factorization.

1321442142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128.

The product of its digits is 1536, while the sum is 24.

The square root of 1321442142 is about 36351.6456573839. The cubic root of 1321442142 is about 1097.3606534685.

Adding to 1321442142 its reverse (2412441231), we get a palindrome (3733883373).

The spelling of 1321442142 in words is "one billion, three hundred twenty-one million, four hundred forty-two thousand, one hundred forty-two".