1297415247 has 16 divisors (see below), whose sum is σ = 1842879360. Its totient is φ = 809544672.

The previous prime is 1297415243. The next prime is 1297415261. The reversal of 1297415247 is 7425147921.

It is not a de Polignac number, because 1297415247 - 2² = 1297415243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1297415199 and 1297415208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297415243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132388 + ... + 141849.

It is an arithmetic number, because the mean of its divisors is an integer number (115179960).

Almost surely, 2^1297415247 is an apocalyptic number.

1297415247 is a deficient number, since it is larger than the sum of its proper divisors (545464113).

1297415247 is a wasteful number, since it uses less digits than its factorization.

1297415247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274342.

The product of its digits is 141120, while the sum is 42.

The square root of 1297415247 is about 36019.6508450596. The cubic root of 1297415247 is about 1090.6690746708.

The spelling of 1297415247 in words is "one billion, two hundred ninety-seven million, four hundred fifteen thousand, two hundred forty-seven".