127120765 has 8 divisors (see below), whose sum is σ = 155423448. Its totient is φ = 99777600.

The previous prime is 127120757. The next prime is 127120783. The reversal of 127120765 is 567021721.

It can be written as a sum of positive squares in 4 ways, for example, as 715716 + 126405049 = 846^2 + 11243^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 127120765 - 2³ = 127120757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239586 + ... + 240115.

It is an arithmetic number, because the mean of its divisors is an integer number (19427931).

Almost surely, 2^127120765 is an apocalyptic number.

It is an amenable number.

127120765 is a deficient number, since it is larger than the sum of its proper divisors (28302683).

127120765 is an equidigital number, since it uses as much as digits as its factorization.

127120765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479759.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 127120765 is about 11274.7844768758. The cubic root of 127120765 is about 502.8118440900.

The spelling of 127120765 in words is "one hundred twenty-seven million, one hundred twenty thousand, seven hundred sixty-five".