1297387112 has 24 divisors (see below), whose sum is σ = 2829761010. Its totient is φ = 556022880.

The previous prime is 1297387097. The next prime is 1297387121. The reversal of 1297387112 is 2117837921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 670084996 + 627302116 = 25886^2 + 25046^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1297387112.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1654439 + ... + 1655222.

Almost surely, 2^1297387112 is an apocalyptic number.

It is an amenable number.

1297387112 is an abundant number, since it is smaller than the sum of its proper divisors (1532373898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297387112 is a wasteful number, since it uses less digits than its factorization.

1297387112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309681 (or 3309670 counting only the distinct ones).

The product of its digits is 42336, while the sum is 41.

The square root of 1297387112 is about 36019.2602922381. The cubic root of 1297387112 is about 1090.6611907400.

The spelling of 1297387112 in words is "one billion, two hundred ninety-seven million, three hundred eighty-seven thousand, one hundred twelve".