137281274 has 8 divisors (see below), whose sum is σ = 221762100. Its totient is φ = 63360576.

The previous prime is 137281247. The next prime is 137281297. The reversal of 137281274 is 472182731.

It can be written as a sum of positive squares in 2 ways, for example, as 136726249 + 555025 = 11693^2 + 745^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×137281274² = 37692296382126152, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2639999 + ... + 2640050.

Almost surely, 2^137281274 is an apocalyptic number.

137281274 is a deficient number, since it is larger than the sum of its proper divisors (84480826).

137281274 is a wasteful number, since it uses less digits than its factorization.

137281274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280064.

The product of its digits is 18816, while the sum is 35.

The square root of 137281274 is about 11716.7091796289. The cubic root of 137281274 is about 515.8662318754.

The spelling of 137281274 in words is "one hundred thirty-seven million, two hundred eighty-one thousand, two hundred seventy-four".