123852121 has 4 divisors (see below), whose sum is σ = 123929872. Its totient is φ = 123774372.

The previous prime is 123852109. The next prime is 123852139. The reversal of 123852121 is 121258321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123852121 - 2⁷ = 123851993 is a prime.

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 (123852101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36435 + ... + 39688.

It is an arithmetic number, because the mean of its divisors is an integer number (30982468).

Almost surely, 2^123852121 is an apocalyptic number.

It is an amenable number.

123852121 is a deficient number, since it is larger than the sum of its proper divisors (77751).

123852121 is an equidigital number, since it uses as much as digits as its factorization.

123852121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77750.

The product of its digits is 960, while the sum is 25.

The square root of 123852121 is about 11128.8867817046. The cubic root of 123852121 is about 498.4647857254.

The spelling of 123852121 in words is "one hundred twenty-three million, eight hundred fifty-two thousand, one hundred twenty-one".