1320399234 has 48 divisors (see below), whose sum is σ = 3566796480. Its totient is φ = 342960480.

The previous prime is 1320399233. The next prime is 1320399251. The reversal of 1320399234 is 4329930231.

1320399234 is a `hidden beast` number, since 1 + 32 + 0 + 399 + 234 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1320399233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474949 + ... + 477720.

It is an arithmetic number, because the mean of its divisors is an integer number (74308260).

Almost surely, 2^1320399234 is an apocalyptic number.

1320399234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1320399234 is an abundant number, since it is smaller than the sum of its proper divisors (2246397246).

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

1320399234 is a wasteful number, since it uses less digits than its factorization.

1320399234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952695 (or 952692 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 1320399234 is about 36337.2981108943. The cubic root of 1320399234 is about 1097.0718913217.

The spelling of 1320399234 in words is "one billion, three hundred twenty million, three hundred ninety-nine thousand, two hundred thirty-four".