137842231 has 4 divisors (see below), whose sum is σ = 140178600. Its totient is φ = 135505864.

The previous prime is 137842193. The next prime is 137842247. The reversal of 137842231 is 132248731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132248731 = 619 ⋅213649.

It is a cyclic number.

It is not a de Polignac number, because 137842231 - 2²⁷ = 3624503 is a prime.

It is a super-2 number, since 2×137842231² = 38000961294114722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137842193 and 137842202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137842931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1168096 + ... + 1168213.

It is an arithmetic number, because the mean of its divisors is an integer number (35044650).

Almost surely, 2^137842231 is an apocalyptic number.

137842231 is a deficient number, since it is larger than the sum of its proper divisors (2336369).

137842231 is an equidigital number, since it uses as much as digits as its factorization.

137842231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336368.

The product of its digits is 8064, while the sum is 31.

The square root of 137842231 is about 11740.6231095287. The cubic root of 137842231 is about 516.5679190169.

The spelling of 137842231 in words is "one hundred thirty-seven million, eight hundred forty-two thousand, two hundred thirty-one".