901000123 has 2 divisors, whose sum is σ = 901000124. Its totient is φ = 901000122.

The previous prime is 901000099. The next prime is 901000129. The reversal of 901000123 is 321000109.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 901000123 - 2²¹ = 898902971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 901000097 and 901000106.

It is not a weakly prime, because it can be changed into another prime (901000129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450500061 + 450500062.

It is an arithmetic number, because the mean of its divisors is an integer number (450500062).

Almost surely, 2^901000123 is an apocalyptic number.

901000123 is a deficient number, since it is larger than the sum of its proper divisors (1).

901000123 is an equidigital number, since it uses as much as digits as its factorization.

901000123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 901000123 is about 30016.6640884693. The cubic root of 901000123 is about 965.8468848589.

The spelling of 901000123 in words is "nine hundred one million, one hundred twenty-three", and thus it is an aban number.