1373421744 has 100 divisors (see below), whose sum is σ = 4034665624. Its totient is φ = 450945792.

The previous prime is 1373421743. The next prime is 1373421757. The reversal of 1373421744 is 4471243731.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1373421699 and 1373421708.

It is not an unprimeable number, because it can be changed into a prime (1373421743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 78924 + ... + 94740.

Almost surely, 2^1373421744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1373421744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2017332812).

1373421744 is an abundant number, since it is smaller than the sum of its proper divisors (2661243880).

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

1373421744 is a wasteful number, since it uses less digits than its factorization.

1373421744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15904 (or 15889 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 1373421744 is about 37059.7051256483. The cubic root of 1373421744 is about 1111.5644266501.

The spelling of 1373421744 in words is "one billion, three hundred seventy-three million, four hundred twenty-one thousand, seven hundred forty-four".