490721123 has 8 divisors (see below), whose sum is σ = 514298400. Its totient is φ = 467330688.

The previous prime is 490721107. The next prime is 490721141. The reversal of 490721123 is 321127094.

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 490721123 - 2⁴ = 490721107 is a prime.

It is a super-2 number, since 2×490721123² = 481614441116762258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (490721183) 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, 41318 + ... + 51851.

It is an arithmetic number, because the mean of its divisors is an integer number (64287300).

Almost surely, 2^490721123 is an apocalyptic number.

490721123 is a deficient number, since it is larger than the sum of its proper divisors (23577277).

490721123 is a wasteful number, since it uses less digits than its factorization.

490721123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93421.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 490721123 is about 22152.2261409548. The cubic root of 490721123 is about 788.7600711491.

The spelling of 490721123 in words is "four hundred ninety million, seven hundred twenty-one thousand, one hundred twenty-three".