120013261 has 2 divisors, whose sum is σ = 120013262. Its totient is φ = 120013260.

The previous prime is 120013247. The next prime is 120013337. The reversal of 120013261 is 162310021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118679236 + 1334025 = 10894^2 + 1155^2 .

It is a cyclic number.

It is not a de Polignac number, because 120013261 - 2¹⁵ = 119980493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120013211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60006630 + 60006631.

It is an arithmetic number, because the mean of its divisors is an integer number (60006631).

Almost surely, 2^120013261 is an apocalyptic number.

It is an amenable number.

120013261 is a deficient number, since it is larger than the sum of its proper divisors (1).

120013261 is an equidigital number, since it uses as much as digits as its factorization.

120013261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 120013261 is about 10955.0564124517. The cubic root of 120013261 is about 493.2605833293.

Adding to 120013261 its reverse (162310021), we get a palindrome (282323282).

The spelling of 120013261 in words is "one hundred twenty million, thirteen thousand, two hundred sixty-one".