120851287 has 4 divisors (see below), whose sum is σ = 124117576. Its totient is φ = 117585000.

The previous prime is 120851279. The next prime is 120851321. The reversal of 120851287 is 782158021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 782158021 = 389 ⋅2010689.

It is a cyclic number.

It is not a de Polignac number, because 120851287 - 2³ = 120851279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120852287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1633089 + ... + 1633162.

It is an arithmetic number, because the mean of its divisors is an integer number (31029394).

Almost surely, 2^120851287 is an apocalyptic number.

120851287 is a deficient number, since it is larger than the sum of its proper divisors (3266289).

120851287 is an equidigital number, since it uses as much as digits as its factorization.

120851287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266288.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 120851287 is about 10993.2382399364. The cubic root of 120851287 is about 494.4060310893.

The spelling of 120851287 in words is "one hundred twenty million, eight hundred fifty-one thousand, two hundred eighty-seven".