1321134042 has 16 divisors (see below), whose sum is σ = 2646045792. Its totient is φ = 439748400.

The previous prime is 1321134019. The next prime is 1321134043. The reversal of 1321134042 is 2404311231.

It is not an unprimeable number, because it can be changed into a prime (1321134043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152848 + ... + 161259.

It is an arithmetic number, because the mean of its divisors is an integer number (165377862).

Almost surely, 2^1321134042 is an apocalyptic number.

1321134042 is an abundant number, since it is smaller than the sum of its proper divisors (1324911750).

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

1321134042 is a wasteful number, since it uses less digits than its factorization.

1321134042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314813.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1321134042 is about 36347.4076379595. The cubic root of 1321134042 is about 1097.2753620317.

Adding to 1321134042 its reverse (2404311231), we get a palindrome (3725445273).

The spelling of 1321134042 in words is "one billion, three hundred twenty-one million, one hundred thirty-four thousand, forty-two".