120236861 has 2 divisors, whose sum is σ = 120236862. Its totient is φ = 120236860.

The previous prime is 120236849. The next prime is 120236881. The reversal of 120236861 is 168632021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63520900 + 56715961 = 7970^2 + 7531^2 .

It is a cyclic number.

It is not a de Polignac number, because 120236861 - 2⁶ = 120236797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120236881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60118430 + 60118431.

It is an arithmetic number, because the mean of its divisors is an integer number (60118431).

Almost surely, 2^120236861 is an apocalyptic number.

It is an amenable number.

120236861 is a deficient number, since it is larger than the sum of its proper divisors (1).

120236861 is an equidigital number, since it uses as much as digits as its factorization.

120236861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 120236861 is about 10965.2569965323. The cubic root of 120236861 is about 493.5667290547.

Adding to 120236861 its reverse (168632021), we get a palindrome (288868882).

The spelling of 120236861 in words is "one hundred twenty million, two hundred thirty-six thousand, eight hundred sixty-one".