120142745 has 8 divisors (see below), whose sum is σ = 145658184. Its totient is φ = 95122944.

The previous prime is 120142741. The next prime is 120142747. The reversal of 120142745 is 547241021.

It can be written as a sum of positive squares in 4 ways, for example, as 262144 + 119880601 = 512^2 + 10949^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120142745 - 2² = 120142741 is a prime.

It is a super-2 number, since 2×120142745² = 28868558352270050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120142741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123374 + ... + 124343.

It is an arithmetic number, because the mean of its divisors is an integer number (18207273).

Almost surely, 2^120142745 is an apocalyptic number.

It is an amenable number.

120142745 is a deficient number, since it is larger than the sum of its proper divisors (25515439).

120142745 is an equidigital number, since it uses as much as digits as its factorization.

120142745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247819.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 120142745 is about 10960.9646017128. The cubic root of 120142745 is about 493.4379148362.

Adding to 120142745 its reverse (547241021), we get a palindrome (667383766).

The spelling of 120142745 in words is "one hundred twenty million, one hundred forty-two thousand, seven hundred forty-five".