1321143874 has 16 divisors (see below), whose sum is σ = 2086856640. Its totient is φ = 626052240.

The previous prime is 1321143841. The next prime is 1321143883. The reversal of 1321143874 is 4783411231.

It is a super-2 number, since 2×1321143874² = 3490842271615455752, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126732 + ... + 136759.

It is an arithmetic number, because the mean of its divisors is an integer number (130428540).

Almost surely, 2^1321143874 is an apocalyptic number.

1321143874 is a deficient number, since it is larger than the sum of its proper divisors (765712766).

1321143874 is a wasteful number, since it uses less digits than its factorization.

1321143874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263625.

The product of its digits is 16128, while the sum is 34.

The square root of 1321143874 is about 36347.5428880688. The cubic root of 1321143874 is about 1097.2780840327.

The spelling of 1321143874 in words is "one billion, three hundred twenty-one million, one hundred forty-three thousand, eight hundred seventy-four".