127426997 has 2 divisors, whose sum is σ = 127426998. Its totient is φ = 127426996.

The previous prime is 127426991. The next prime is 127427029. The reversal of 127426997 is 799624721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119814916 + 7612081 = 10946^2 + 2759^2 .

It is a cyclic number.

It is not a de Polignac number, because 127426997 - 2¹² = 127422901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127426991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63713498 + 63713499.

It is an arithmetic number, because the mean of its divisors is an integer number (63713499).

Almost surely, 2^127426997 is an apocalyptic number.

It is an amenable number.

127426997 is a deficient number, since it is larger than the sum of its proper divisors (1).

127426997 is an equidigital number, since it uses as much as digits as its factorization.

127426997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 127426997 is about 11288.3567006008. The cubic root of 127426997 is about 503.2152756852.

The spelling of 127426997 in words is "one hundred twenty-seven million, four hundred twenty-six thousand, nine hundred ninety-seven".