127985737 has 4 divisors (see below), whose sum is σ = 139620816. Its totient is φ = 116350660.

The previous prime is 127985719. The next prime is 127985749. The reversal of 127985737 is 737589721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 127985737 - 2¹¹ = 127983689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127985437) 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, 5817523 + ... + 5817544.

It is an arithmetic number, because the mean of its divisors is an integer number (34905204).

Almost surely, 2^127985737 is an apocalyptic number.

It is an amenable number.

127985737 is a deficient number, since it is larger than the sum of its proper divisors (11635079).

127985737 is a wasteful number, since it uses less digits than its factorization.

127985737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11635078.

The product of its digits is 740880, while the sum is 49.

The square root of 127985737 is about 11313.0781399228. The cubic root of 127985737 is about 503.9497002481.

The spelling of 127985737 in words is "one hundred twenty-seven million, nine hundred eighty-five thousand, seven hundred thirty-seven".