137740238 has 32 divisors (see below), whose sum is σ = 222566400. Its totient is φ = 63771840.

The previous prime is 137740231. The next prime is 137740259. The reversal of 137740238 is 832047731.

137740238 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 137740198 and 137740207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137740231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 375131 + ... + 375497.

It is an arithmetic number, because the mean of its divisors is an integer number (6955200).

Almost surely, 2^137740238 is an apocalyptic number.

137740238 is a deficient number, since it is larger than the sum of its proper divisors (84826162).

137740238 is a wasteful number, since it uses less digits than its factorization.

137740238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 137740238 is about 11736.2787117553. The cubic root of 137740238 is about 516.4404802985.

Adding to 137740238 its reverse (832047731), we get a palindrome (969787969).

The spelling of 137740238 in words is "one hundred thirty-seven million, seven hundred forty thousand, two hundred thirty-eight".