127440917 has 2 divisors, whose sum is σ = 127440918. Its totient is φ = 127440916.

The previous prime is 127440893. The next prime is 127440941. The reversal of 127440917 is 719044721.

It is a balanced prime because it is at equal distance from previous prime (127440893) and next prime (127440941).

It can be written as a sum of positive squares in only one way, i.e., 120253156 + 7187761 = 10966^2 + 2681^2 .

It is a cyclic number.

It is not a de Polignac number, because 127440917 - 2⁶ = 127440853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127440977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63720458 + 63720459.

It is an arithmetic number, because the mean of its divisors is an integer number (63720459).

Almost surely, 2^127440917 is an apocalyptic number.

It is an amenable number.

127440917 is a deficient number, since it is larger than the sum of its proper divisors (1).

127440917 is an equidigital number, since it uses as much as digits as its factorization.

127440917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 127440917 is about 11288.9732482631. The cubic root of 127440917 is about 503.2335985988.

The spelling of 127440917 in words is "one hundred twenty-seven million, four hundred forty thousand, nine hundred seventeen".