116520421 has 4 divisors (see below), whose sum is σ = 116683200. Its totient is φ = 116357644.

The previous prime is 116520403. The next prime is 116520433. The reversal of 116520421 is 124025611.

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 116520421 - 2¹¹ = 116518373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 116520392 and 116520401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116520821) 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, 80311 + ... + 81748.

It is an arithmetic number, because the mean of its divisors is an integer number (29170800).

Almost surely, 2^116520421 is an apocalyptic number.

It is an amenable number.

116520421 is a deficient number, since it is larger than the sum of its proper divisors (162779).

116520421 is an equidigital number, since it uses as much as digits as its factorization.

116520421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162778.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 116520421 is about 10794.4625155679. The cubic root of 116520421 is about 488.4281450975.

The spelling of 116520421 in words is "one hundred sixteen million, five hundred twenty thousand, four hundred twenty-one".