120121487 has 2 divisors, whose sum is σ = 120121488. Its totient is φ = 120121486.

The previous prime is 120121471. The next prime is 120121493. The reversal of 120121487 is 784121021.

It is a strong prime.

It is an emirp because it is prime and its reverse (784121021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120121487 - 2⁴ = 120121471 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 (120121457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060743 + 60060744.

It is an arithmetic number, because the mean of its divisors is an integer number (60060744).

Almost surely, 2^120121487 is an apocalyptic number.

120121487 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121487 is an equidigital number, since it uses as much as digits as its factorization.

120121487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 120121487 is about 10959.9948448893. The cubic root of 120121487 is about 493.4088102298.

The spelling of 120121487 in words is "one hundred twenty million, one hundred twenty-one thousand, four hundred eighty-seven".