1321700129 has 8 divisors (see below), whose sum is σ = 1383080832. Its totient is φ = 1260645760.

The previous prime is 1321700119. The next prime is 1321700137. The reversal of 1321700129 is 9210071231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321700129 - 2²⁸ = 1053264673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321700098 and 1321700107.

It is not an unprimeable number, because it can be changed into a prime (1321700119) 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, 73277 + ... + 89514.

It is an arithmetic number, because the mean of its divisors is an integer number (172885104).

Almost surely, 2^1321700129 is an apocalyptic number.

It is an amenable number.

1321700129 is a deficient number, since it is larger than the sum of its proper divisors (61380703).

1321700129 is a wasteful number, since it uses less digits than its factorization.

1321700129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163167.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1321700129 is about 36355.1939755518. The cubic root of 1321700129 is about 1097.4320619074.

The spelling of 1321700129 in words is "one billion, three hundred twenty-one million, seven hundred thousand, one hundred twenty-nine".