120237581 has 2 divisors, whose sum is σ = 120237582. Its totient is φ = 120237580.

The previous prime is 120237569. The next prime is 120237599. The reversal of 120237581 is 185732021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113081956 + 7155625 = 10634^2 + 2675^2 .

It is a cyclic number.

It is not a de Polignac number, because 120237581 - 2¹⁴ = 120221197 is a prime.

It is a super-2 number, since 2×120237581² = 28914151769463122, which contains 22 as substring.

It is equal to p_6854501 and since 120237581 and 6854501 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120237521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60118790 + 60118791.

It is an arithmetic number, because the mean of its divisors is an integer number (60118791).

Almost surely, 2^120237581 is an apocalyptic number.

It is an amenable number.

120237581 is a deficient number, since it is larger than the sum of its proper divisors (1).

120237581 is an equidigital number, since it uses as much as digits as its factorization.

120237581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 120237581 is about 10965.2898274510. The cubic root of 120237581 is about 493.5677142416.

It can be divided in two parts, 1202 and 37581, that added together give a palindrome (38783).

The spelling of 120237581 in words is "one hundred twenty million, two hundred thirty-seven thousand, five hundred eighty-one".