120578613 has 4 divisors (see below), whose sum is σ = 160771488. Its totient is φ = 80385740.

The previous prime is 120578609. The next prime is 120578629. The reversal of 120578613 is 316875021.

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: 316875021 = 3 ⋅105625007.

It is a cyclic number.

It is not a de Polignac number, because 120578613 - 2² = 120578609 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120578113) 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, 20096433 + ... + 20096438.

It is an arithmetic number, because the mean of its divisors is an integer number (40192872).

Almost surely, 2^120578613 is an apocalyptic number.

It is an amenable number.

120578613 is a deficient number, since it is larger than the sum of its proper divisors (40192875).

120578613 is an equidigital number, since it uses as much as digits as its factorization.

120578613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40192874.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 120578613 is about 10980.8293402639. The cubic root of 120578613 is about 494.0339120671.

The spelling of 120578613 in words is "one hundred twenty million, five hundred seventy-eight thousand, six hundred thirteen".