123010921 has 8 divisors (see below), whose sum is σ = 141256800. Its totient is φ = 105942240.

The previous prime is 123010889. The next prime is 123010939. The reversal of 123010921 is 129010321.

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 123010921 - 2⁵ = 123010889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123010961) 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, 294076 + ... + 294493.

It is an arithmetic number, because the mean of its divisors is an integer number (17657100).

Almost surely, 2^123010921 is an apocalyptic number.

123010921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123010921 is a deficient number, since it is larger than the sum of its proper divisors (18245879).

123010921 is a wasteful number, since it uses less digits than its factorization.

123010921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588599.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 123010921 is about 11091.0288521850. The cubic root of 123010921 is about 497.3337016463. Note that the first 3 decimals are identical.

The spelling of 123010921 in words is "one hundred twenty-three million, ten thousand, nine hundred twenty-one".