720204123 has 8 divisors (see below), whose sum is σ = 962375248. Its totient is φ = 479084544.

The previous prime is 720204097. The next prime is 720204127. The reversal of 720204123 is 321402027.

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

It is not a de Polignac number, because 720204123 - 2¹² = 720200027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 720204123.

It is not an unprimeable number, because it can be changed into a prime (720204127) 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, 261286 + ... + 264027.

It is an arithmetic number, because the mean of its divisors is an integer number (120296906).

Almost surely, 2^720204123 is an apocalyptic number.

720204123 is a deficient number, since it is larger than the sum of its proper divisors (242171125).

720204123 is a wasteful number, since it uses less digits than its factorization.

720204123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525773.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 720204123 is about 26836.6190679825. The cubic root of 720204123 is about 896.3656411030.

The spelling of 720204123 in words is "seven hundred twenty million, two hundred four thousand, one hundred twenty-three".