120142645 has 16 divisors (see below), whose sum is σ = 168600960. Its totient is φ = 80466624.

The previous prime is 120142637. The next prime is 120142651. The reversal of 120142645 is 546241021.

It is a happy number.

It is not a de Polignac number, because 120142645 - 2³ = 120142637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38410 + ... + 41419.

It is an arithmetic number, because the mean of its divisors is an integer number (10537560).

Almost surely, 2^120142645 is an apocalyptic number.

It is an amenable number.

120142645 is a deficient number, since it is larger than the sum of its proper divisors (48458315).

120142645 is an equidigital number, since it uses as much as digits as its factorization.

120142645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79884.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 120142645 is about 10960.9600400695. The cubic root of 120142645 is about 493.4377779329.

Adding to 120142645 its reverse (546241021), we get a palindrome (666383666).

The spelling of 120142645 in words is "one hundred twenty million, one hundred forty-two thousand, six hundred forty-five".