120578 has 4 divisors (see below), whose sum is σ = 180870. Its totient is φ = 60288.

The previous prime is 120577. The next prime is 120587. The reversal of 120578 is 875021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 875021 = 7 ⋅125003.

It can be written as a sum of positive squares in only one way, i.e., 120409 + 169 = 347^2 + 13^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30143 + ... + 30146.

2¹²⁰⁵⁷⁸ is an apocalyptic number.

120578 is a deficient number, since it is larger than the sum of its proper divisors (60292).

120578 is an equidigital number, since it uses as much as digits as its factorization.

120578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60291.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 120578 is about 347.2434304634. The cubic root of 120578 is about 49.4033074872.

Adding to 120578 its reverse (875021), we get a palindrome (995599).

The spelling of 120578 in words is "one hundred twenty thousand, five hundred seventy-eight".