1321297468 has 48 divisors (see below), whose sum is σ = 2548465920. Its totient is φ = 596623104.

The previous prime is 1321297463. The next prime is 1321297489. The reversal of 1321297468 is 8647921231.

It is a super-2 number, since 2×1321297468² = 3491653997886422048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321297463) 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, 587955 + ... + 590197.

It is an arithmetic number, because the mean of its divisors is an integer number (53093040).

Almost surely, 2^1321297468 is an apocalyptic number.

It is an amenable number.

1321297468 is a deficient number, since it is larger than the sum of its proper divisors (1227168452).

1321297468 is a wasteful number, since it uses less digits than its factorization.

1321297468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626 (or 2624 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 1321297468 is about 36349.6556792496. The cubic root of 1321297468 is about 1097.3206049629.

The spelling of 1321297468 in words is "one billion, three hundred twenty-one million, two hundred ninety-seven thousand, four hundred sixty-eight".