136726249 has 9 divisors (see below), whose sum is σ = 150427389. Its totient is φ = 124179660.

The previous prime is 136726241. The next prime is 136726259. The reversal of 136726249 is 942627631.

It is a happy number.

The square root of 136726249 is 11693.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 136726249 - 2³ = 136726241 is a prime.

It is a super-2 number, since 2×136726249² = 37388134331220002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136726241) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 128092 + ... + 129154.

Almost surely, 2^136726249 is an apocalyptic number.

136726249 is the 11693-rd square number.

136726249 is the 5847-th centered octagonal number.

It is an amenable number.

136726249 is a deficient number, since it is larger than the sum of its proper divisors (13701140).

136726249 is an frugal number, since it uses more digits than its factorization.

136726249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148 (or 1074 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The cubic root of 136726249 is about 515.1700811285.

The spelling of 136726249 in words is "one hundred thirty-six million, seven hundred twenty-six thousand, two hundred forty-nine".