120815087 has 2 divisors, whose sum is σ = 120815088. Its totient is φ = 120815086.

The previous prime is 120815083. The next prime is 120815203. The reversal of 120815087 is 780518021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120815087 - 2² = 120815083 is a prime.

It is equal to p_6885311 and since 120815087 and 6885311 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 (120815081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60407543 + 60407544.

It is an arithmetic number, because the mean of its divisors is an integer number (60407544).

Almost surely, 2^120815087 is an apocalyptic number.

120815087 is a deficient number, since it is larger than the sum of its proper divisors (1).

120815087 is an equidigital number, since it uses as much as digits as its factorization.

120815087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 120815087 is about 10991.5916499841. The cubic root of 120815087 is about 494.3566610851.

The spelling of 120815087 in words is "one hundred twenty million, eight hundred fifteen thousand, eighty-seven".