126993165 has 16 divisors (see below), whose sum is σ = 218819328. Its totient is φ = 62519616.

The previous prime is 126993157. The next prime is 126993187. The reversal of 126993165 is 561399621.

It is not a de Polignac number, because 126993165 - 2³ = 126993157 is a prime.

It is a super-2 number, since 2×126993165² = 32254527913434450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 325429 + ... + 325818.

It is an arithmetic number, because the mean of its divisors is an integer number (13676208).

Almost surely, 2^126993165 is an apocalyptic number.

126993165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126993165 is a deficient number, since it is larger than the sum of its proper divisors (91826163).

126993165 is a wasteful number, since it uses less digits than its factorization.

126993165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651268.

The product of its digits is 87480, while the sum is 42.

The square root of 126993165 is about 11269.1244114172. The cubic root of 126993165 is about 502.6435519672.

The spelling of 126993165 in words is "one hundred twenty-six million, nine hundred ninety-three thousand, one hundred sixty-five".