120618517 has 4 divisors (see below), whose sum is σ = 126966880. Its totient is φ = 114270156.

The previous prime is 120618503. The next prime is 120618523. The reversal of 120618517 is 715816021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 715816021 = 1427 ⋅501623.

It is a cyclic number.

It is not a de Polignac number, because 120618517 - 2¹¹ = 120616469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120618217) 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, 3174153 + ... + 3174190.

It is an arithmetic number, because the mean of its divisors is an integer number (31741720).

Almost surely, 2^120618517 is an apocalyptic number.

It is an amenable number.

120618517 is a deficient number, since it is larger than the sum of its proper divisors (6348363).

120618517 is an equidigital number, since it uses as much as digits as its factorization.

120618517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6348362.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 120618517 is about 10982.6461747613. The cubic root of 120618517 is about 494.0884041931.

The spelling of 120618517 in words is "one hundred twenty million, six hundred eighteen thousand, five hundred seventeen".