137240 has 32 divisors (see below), whose sum is σ = 319680. Its totient is φ = 52992.

The previous prime is 137239. The next prime is 137251. The reversal of 137240 is 42731.

137240 = 85² + 86² + ... + 100².

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1844 + ... + 1916.

It is an arithmetic number, because the mean of its divisors is an integer number (9990).

2¹³⁷²⁴⁰ is an apocalyptic number.

137240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 137240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159840).

137240 is an abundant number, since it is smaller than the sum of its proper divisors (182440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137240 is a wasteful number, since it uses less digits than its factorization.

137240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 137240 is about 370.4591745388. The cubic root of 137240 is about 51.5814527817.

Adding to 137240 its reverse (42731), we get a palindrome (179971).

The spelling of 137240 in words is "one hundred thirty-seven thousand, two hundred forty".