137242727 has 2 divisors, whose sum is σ = 137242728. Its totient is φ = 137242726.

The previous prime is 137242723. The next prime is 137242747. The reversal of 137242727 is 727242731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137242727 - 2² = 137242723 is a prime.

It is a super-3 number, since 3×137242727³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137242723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68621363 + 68621364.

It is an arithmetic number, because the mean of its divisors is an integer number (68621364).

Almost surely, 2^137242727 is an apocalyptic number.

137242727 is a deficient number, since it is larger than the sum of its proper divisors (1).

137242727 is an equidigital number, since it uses as much as digits as its factorization.

137242727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32928, while the sum is 35.

The square root of 137242727 is about 11715.0641056718. The cubic root of 137242727 is about 515.8179442575.

The spelling of 137242727 in words is "one hundred thirty-seven million, two hundred forty-two thousand, seven hundred twenty-seven".