1297239148 has 12 divisors (see below), whose sum is σ = 2282055552. Its totient is φ = 645223280.

The previous prime is 1297239137. The next prime is 1297239149. The reversal of 1297239148 is 8419327921.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1297239098 and 1297239107.

It is not an unprimeable number, because it can be changed into a prime (1297239149) 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, 848215 + ... + 849742.

It is an arithmetic number, because the mean of its divisors is an integer number (190171296).

Almost surely, 2^1297239148 is an apocalyptic number.

It is an amenable number.

1297239148 is a deficient number, since it is larger than the sum of its proper divisors (984816404).

1297239148 is a wasteful number, since it uses less digits than its factorization.

1297239148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698152 (or 1698150 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 1297239148 is about 36017.2062770004. The cubic root of 1297239148 is about 1090.6197267014.

The spelling of 1297239148 in words is "one billion, two hundred ninety-seven million, two hundred thirty-nine thousand, one hundred forty-eight".