122887871 has 4 divisors (see below), whose sum is σ = 123028872. Its totient is φ = 122746872.

The previous prime is 122887859. The next prime is 122887879. The reversal of 122887871 is 178788221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122887871 - 2²² = 118693567 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 (122887879) 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, 69185 + ... + 70938.

It is an arithmetic number, because the mean of its divisors is an integer number (30757218).

Almost surely, 2^122887871 is an apocalyptic number.

122887871 is a deficient number, since it is larger than the sum of its proper divisors (141001).

122887871 is an equidigital number, since it uses as much as digits as its factorization.

122887871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141000.

The product of its digits is 100352, while the sum is 44.

The square root of 122887871 is about 11085.4801880658. The cubic root of 122887871 is about 497.1678157551.

The spelling of 122887871 in words is "one hundred twenty-two million, eight hundred eighty-seven thousand, eight hundred seventy-one".