1230720929 has 8 divisors (see below), whose sum is σ = 1249147200. Its totient is φ = 1212380496.

The previous prime is 1230720917. The next prime is 1230720971. The reversal of 1230720929 is 9290270321.

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 1230720929 - 2⁴ = 1230720913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230720979) 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, 7724 + ... + 50210.

It is an arithmetic number, because the mean of its divisors is an integer number (156143400).

Almost surely, 2^1230720929 is an apocalyptic number.

It is an amenable number.

1230720929 is a deficient number, since it is larger than the sum of its proper divisors (18426271).

1230720929 is an equidigital number, since it uses as much as digits as its factorization.

1230720929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42919.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1230720929 is about 35081.6323593986. The cubic root of 1230720929 is about 1071.6505602651.

The spelling of 1230720929 in words is "one billion, two hundred thirty million, seven hundred twenty thousand, nine hundred twenty-nine".