122142387 has 8 divisors (see below), whose sum is σ = 168110080. Its totient is φ = 78801480.

The previous prime is 122142379. The next prime is 122142401. The reversal of 122142387 is 783241221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122142387 - 2³ = 122142379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122142367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656587 + ... + 656772.

It is an arithmetic number, because the mean of its divisors is an integer number (21013760).

Almost surely, 2^122142387 is an apocalyptic number.

122142387 is a deficient number, since it is larger than the sum of its proper divisors (45967693).

122142387 is a wasteful number, since it uses less digits than its factorization.

122142387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313393.

The product of its digits is 5376, while the sum is 30.

The square root of 122142387 is about 11051.8046942570. The cubic root of 122142387 is about 496.1604403685.

The spelling of 122142387 in words is "one hundred twenty-two million, one hundred forty-two thousand, three hundred eighty-seven".