1321204092 has 48 divisors (see below), whose sum is σ = 3328000032. Its totient is φ = 405538560.

The previous prime is 1321204061. The next prime is 1321204163. The reversal of 1321204092 is 2904021231.

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, 55618 + ... + 75734.

It is an arithmetic number, because the mean of its divisors is an integer number (69333334).

Almost surely, 2^1321204092 is an apocalyptic number.

1321204092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321204092 is an abundant number, since it is smaller than the sum of its proper divisors (2006795940).

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

1321204092 is a wasteful number, since it uses less digits than its factorization.

1321204092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20558 (or 20556 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1321204092 is about 36348.3712427393. The cubic root of 1321204092 is about 1097.2947551637.

The spelling of 1321204092 in words is "one billion, three hundred twenty-one million, two hundred four thousand, ninety-two".