137872727 has 2 divisors, whose sum is σ = 137872728. Its totient is φ = 137872726.

The previous prime is 137872687. The next prime is 137872733. The reversal of 137872727 is 727278731.

It is a strong prime.

It is an emirp because it is prime and its reverse (727278731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137872727 - 2¹² = 137868631 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137872127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68936363 + 68936364.

It is an arithmetic number, because the mean of its divisors is an integer number (68936364).

Almost surely, 2^137872727 is an apocalyptic number.

137872727 is a deficient number, since it is larger than the sum of its proper divisors (1).

137872727 is an equidigital number, since it uses as much as digits as its factorization.

137872727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230496, while the sum is 44.

The square root of 137872727 is about 11741.9217762681. The cubic root of 137872727 is about 516.6060111012.

The spelling of 137872727 in words is "one hundred thirty-seven million, eight hundred seventy-two thousand, seven hundred twenty-seven".