1321079142 has 16 divisors (see below), whose sum is σ = 2642900400. Its totient is φ = 440236032.

The previous prime is 1321079141. The next prime is 1321079161. The reversal of 1321079142 is 2419701231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321079141) 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, 6267 + ... + 51782.

It is an arithmetic number, because the mean of its divisors is an integer number (165181275).

Almost surely, 2^1321079142 is an apocalyptic number.

1321079142 is an abundant number, since it is smaller than the sum of its proper divisors (1321821258).

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

1321079142 is a wasteful number, since it uses less digits than its factorization.

1321079142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61847.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1321079142 is about 36346.6524180701. The cubic root of 1321079142 is about 1097.2601626525.

The spelling of 1321079142 in words is "one billion, three hundred twenty-one million, seventy-nine thousand, one hundred forty-two".