122950987 has 4 divisors (see below), whose sum is σ = 130183416. Its totient is φ = 115718560.

The previous prime is 122950979. The next prime is 122950999. The reversal of 122950987 is 789059221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789059221 = 2087 ⋅378083.

It is a cyclic number.

It is not a de Polignac number, because 122950987 - 2³ = 122950979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122950187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3616189 + ... + 3616222.

It is an arithmetic number, because the mean of its divisors is an integer number (32545854).

Almost surely, 2^122950987 is an apocalyptic number.

122950987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

122950987 is a deficient number, since it is larger than the sum of its proper divisors (7232429).

122950987 is an equidigital number, since it uses as much as digits as its factorization.

122950987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7232428.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 122950987 is about 11088.3266095475. The cubic root of 122950987 is about 497.2529173819.

The spelling of 122950987 in words is "one hundred twenty-two million, nine hundred fifty thousand, nine hundred eighty-seven".