120513961 has 4 divisors (see below), whose sum is σ = 120711172. Its totient is φ = 120316752.

The previous prime is 120513959. The next prime is 120513977. The reversal of 120513961 is 169315021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 169315021 = 29 ⋅5838449.

It can be written as a sum of positive squares in 2 ways, for example, as 51208336 + 69305625 = 7156^2 + 8325^2 .

It is a cyclic number.

It is not a de Polignac number, because 120513961 - 2¹ = 120513959 is a prime.

It is a super-2 number, since 2×120513961² = 29047229591819042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120513161) 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, 97686 + ... + 98911.

It is an arithmetic number, because the mean of its divisors is an integer number (30177793).

Almost surely, 2^120513961 is an apocalyptic number.

It is an amenable number.

120513961 is a deficient number, since it is larger than the sum of its proper divisors (197211).

120513961 is an equidigital number, since it uses as much as digits as its factorization.

120513961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197210.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 120513961 is about 10977.8850877571. The cubic root of 120513961 is about 493.9455990294.

Adding to 120513961 its reverse (169315021), we get a palindrome (289828982).

The spelling of 120513961 in words is "one hundred twenty million, five hundred thirteen thousand, nine hundred sixty-one".