120312442 has 4 divisors (see below), whose sum is σ = 180468666. Its totient is φ = 60156220.

The previous prime is 120312403. The next prime is 120312443. The reversal of 120312442 is 244213021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244213021 = 13 ⋅18785617.

It can be written as a sum of positive squares in only one way, i.e., 120143521 + 168921 = 10961^2 + 411^2 .

It is not an unprimeable number, because it can be changed into a prime (120312443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30078109 + ... + 30078112.

Almost surely, 2^120312442 is an apocalyptic number.

120312442 is a deficient number, since it is larger than the sum of its proper divisors (60156224).

120312442 is an equidigital number, since it uses as much as digits as its factorization.

120312442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60156223.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 120312442 is about 10968.7028403545. The cubic root of 120312442 is about 493.6701262239.

Adding to 120312442 its reverse (244213021), we get a palindrome (364525463).

The spelling of 120312442 in words is "one hundred twenty million, three hundred twelve thousand, four hundred forty-two".