122915 has 16 divisors (see below), whose sum is σ = 166656. Its totient is φ = 86400.

The previous prime is 122891. The next prime is 122921. The reversal of 122915 is 519221.

122915 = 36² + 37² + ... + 74².

It is not a de Polignac number, because 122915 - 2¹² = 118819 is a prime.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1985 + ... + 2045.

It is an arithmetic number, because the mean of its divisors is an integer number (10416).

2¹²²⁹¹⁵ is an apocalyptic number.

122915 is a deficient number, since it is larger than the sum of its proper divisors (43741).

122915 is a wasteful number, since it uses less digits than its factorization.

122915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110.

The product of its digits is 180, while the sum is 20.

The square root of 122915 is about 350.5923558779. The cubic root of 122915 is about 49.7204398354.

It can be divided in two parts, 12 and 2915, that multiplied together give a triangular number (34980 = T₂₆₄).

The spelling of 122915 in words is "one hundred twenty-two thousand, nine hundred fifteen".