1375121426 has 16 divisors (see below), whose sum is σ = 2357827584. Its totient is φ = 589218624.

The previous prime is 1375121399. The next prime is 1375121443. The reversal of 1375121426 is 6241215731.

It is a junction number, because it is equal to n+sod(n) for n = 1375121392 and 1375121401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125546 + ... + 136058.

It is an arithmetic number, because the mean of its divisors is an integer number (147364224).

Almost surely, 2^1375121426 is an apocalyptic number.

1375121426 is a deficient number, since it is larger than the sum of its proper divisors (982706158).

1375121426 is a wasteful number, since it uses less digits than its factorization.

1375121426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19865.

The product of its digits is 10080, while the sum is 32.

The square root of 1375121426 is about 37082.6297071823. The cubic root of 1375121426 is about 1112.0227775341.

The spelling of 1375121426 in words is "one billion, three hundred seventy-five million, one hundred twenty-one thousand, four hundred twenty-six".