1375121424 has 160 divisors (see below), whose sum is σ = 3849753600. Its totient is φ = 421876224.

The previous prime is 1375121399. The next prime is 1375121443. The reversal of 1375121424 is 4241215731.

It is a junction number, because it is equal to n+sod(n) for n = 1375121391 and 1375121400.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3940002 + ... + 3940350.

It is an arithmetic number, because the mean of its divisors is an integer number (24060960).

Almost surely, 2^1375121424 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 1375121424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1924876800).

1375121424 is an abundant number, since it is smaller than the sum of its proper divisors (2474632176).

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

1375121424 is a wasteful number, since it uses less digits than its factorization.

1375121424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 503 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 1375121424 is about 37082.6296802155. The cubic root of 1375121424 is about 1112.0227769949.

The spelling of 1375121424 in words is "one billion, three hundred seventy-five million, one hundred twenty-one thousand, four hundred twenty-four".