149117 has 4 divisors (see below), whose sum is σ = 152796. Its totient is φ = 145440.

The previous prime is 149113. The next prime is 149119. The reversal of 149117 is 711941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 711941 = 263 ⋅2707.

It can be written as a sum of positive squares in 2 ways, for example, as 5476 + 143641 = 74^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 149117 - 2² = 149113 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 149092 and 149101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149111) 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, 1778 + ... + 1859.

It is an arithmetic number, because the mean of its divisors is an integer number (38199).

2¹⁴⁹¹¹⁷ is an apocalyptic number.

It is an amenable number.

149117 is a deficient number, since it is larger than the sum of its proper divisors (3679).

149117 is an equidigital number, since it uses as much as digits as its factorization.

149117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3678.

The product of its digits is 252, while the sum is 23.

The square root of 149117 is about 386.1567039428. The cubic root of 149117 is about 53.0284645959.

The spelling of 149117 in words is "one hundred forty-nine thousand, one hundred seventeen".