1320751424 has 14 divisors (see below), whose sum is σ = 2620866234. Its totient is φ = 660375680.

The previous prime is 1320751381. The next prime is 1320751441. The reversal of 1320751424 is 4241570231.

It can be written as a sum of positive squares in only one way, i.e., 1153825024 + 166926400 = 33968^2 + 12920^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10318307 + ... + 10318434.

It is an arithmetic number, because the mean of its divisors is an integer number (187204731).

Almost surely, 2^1320751424 is an apocalyptic number.

It is an amenable number.

1320751424 is a deficient number, since it is larger than the sum of its proper divisors (1300114810).

1320751424 is an equidigital number, since it uses as much as digits as its factorization.

1320751424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20636753 (or 20636743 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1320751424 is about 36342.1439103419. The cubic root of 1320751424 is about 1097.1694232882.

The spelling of 1320751424 in words is "one billion, three hundred twenty million, seven hundred fifty-one thousand, four hundred twenty-four".