137247243 has 16 divisors (see below), whose sum is σ = 209341440. Its totient is φ = 78350976.

The previous prime is 137247197. The next prime is 137247247. The reversal of 137247243 is 342742731.

It is not a de Polignac number, because 137247243 - 2⁸ = 137246987 is a prime.

It is a super-2 number, since 2×137247243² = 37673611422202098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137247247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24718 + ... + 29756.

It is an arithmetic number, because the mean of its divisors is an integer number (13083840).

Almost surely, 2^137247243 is an apocalyptic number.

137247243 is a deficient number, since it is larger than the sum of its proper divisors (72094197).

137247243 is a wasteful number, since it uses less digits than its factorization.

137247243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6346.

The product of its digits is 28224, while the sum is 33.

The square root of 137247243 is about 11715.2568473764. The cubic root of 137247243 is about 515.8236018938.

Adding to 137247243 its reverse (342742731), we get a palindrome (479989974).

The spelling of 137247243 in words is "one hundred thirty-seven million, two hundred forty-seven thousand, two hundred forty-three".