120121537 has 2 divisors, whose sum is σ = 120121538. Its totient is φ = 120121536.

The previous prime is 120121531. The next prime is 120121601. The reversal of 120121537 is 735121021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119924401 + 197136 = 10951^2 + 444^2 .

It is a cyclic number.

It is not a de Polignac number, because 120121537 - 2⁷ = 120121409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120121531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060768 + 60060769.

It is an arithmetic number, because the mean of its divisors is an integer number (60060769).

Almost surely, 2^120121537 is an apocalyptic number.

It is an amenable number.

120121537 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121537 is an equidigital number, since it uses as much as digits as its factorization.

120121537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 120121537 is about 10959.9971259120. The cubic root of 120121537 is about 493.4088786895.

Adding to 120121537 its reverse (735121021), we get a palindrome (855242558).

The spelling of 120121537 in words is "one hundred twenty million, one hundred twenty-one thousand, five hundred thirty-seven".