117726137 has 4 divisors (see below), whose sum is σ = 117749136. Its totient is φ = 117703140.

The previous prime is 117726113. The next prime is 117726143. The reversal of 117726137 is 731627711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 731627711 = 1511 ⋅484201.

It is a cyclic number.

It is not a de Polignac number, because 117726137 - 2¹² = 117722041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117726097 and 117726106.

It is not an unprimeable number, because it can be changed into a prime (117729137) 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, 38 + ... + 15344.

It is an arithmetic number, because the mean of its divisors is an integer number (29437284).

Almost surely, 2^117726137 is an apocalyptic number.

It is an amenable number.

117726137 is a deficient number, since it is larger than the sum of its proper divisors (22999).

117726137 is an equidigital number, since it uses as much as digits as its factorization.

117726137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22998.

The product of its digits is 12348, while the sum is 35.

The square root of 117726137 is about 10850.1676023921. The cubic root of 117726137 is about 490.1070667052.

The spelling of 117726137 in words is "one hundred seventeen million, seven hundred twenty-six thousand, one hundred thirty-seven".