137872671 has 4 divisors (see below), whose sum is σ = 183830232. Its totient is φ = 91915112.

The previous prime is 137872661. The next prime is 137872681. The reversal of 137872671 is 176278731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176278731 = 3 ⋅58759577.

It is an interprime number because it is at equal distance from previous prime (137872661) and next prime (137872681).

It is a cyclic number.

It is not a de Polignac number, because 137872671 - 2⁵ = 137872639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137872661) 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, 22978776 + ... + 22978781.

It is an arithmetic number, because the mean of its divisors is an integer number (45957558).

Almost surely, 2^137872671 is an apocalyptic number.

137872671 is a deficient number, since it is larger than the sum of its proper divisors (45957561).

137872671 is an equidigital number, since it uses as much as digits as its factorization.

137872671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45957560.

The product of its digits is 98784, while the sum is 42.

The square root of 137872671 is about 11741.9193916497. The cubic root of 137872671 is about 516.6059411576.

The spelling of 137872671 in words is "one hundred thirty-seven million, eight hundred seventy-two thousand, six hundred seventy-one".