123361521 has 8 divisors (see below), whose sum is σ = 165738144. Its totient is φ = 81612960.

The previous prime is 123361519. The next prime is 123361541. The reversal of 123361521 is 125163321.

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

It is not a de Polignac number, because 123361521 - 2¹ = 123361519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123361491 and 123361500.

It is not an unprimeable number, because it can be changed into a prime (123361541) 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, 156556 + ... + 157341.

It is an arithmetic number, because the mean of its divisors is an integer number (20717268).

Almost surely, 2^123361521 is an apocalyptic number.

It is an amenable number.

123361521 is a deficient number, since it is larger than the sum of its proper divisors (42376623).

123361521 is a wasteful number, since it uses less digits than its factorization.

123361521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314031.

The product of its digits is 1080, while the sum is 24.

The square root of 123361521 is about 11106.8231731670. The cubic root of 123361521 is about 497.8057459178.

The spelling of 123361521 in words is "one hundred twenty-three million, three hundred sixty-one thousand, five hundred twenty-one".