900123 has 8 divisors (see below), whose sum is σ = 1371648. Its totient is φ = 514344.

The previous prime is 900121. The next prime is 900139. The reversal of 900123 is 321009.

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

It is not a de Polignac number, because 900123 - 2¹ = 900121 is a prime.

900123 is a modest number, since divided by 123 gives 9 as remainder.

It is not an unprimeable number, because it can be changed into a prime (900121) 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, 21411 + ... + 21452.

It is an arithmetic number, because the mean of its divisors is an integer number (171456).

2⁹⁰⁰¹²³ is an apocalyptic number.

900123 is a deficient number, since it is larger than the sum of its proper divisors (471525).

900123 is a wasteful number, since it uses less digits than its factorization.

900123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42873.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 900123 is about 948.7481225278. The cubic root of 900123 is about 96.5533366007.

The spelling of 900123 in words is "nine hundred thousand, one hundred twenty-three".