1121397426 has 32 divisors (see below), whose sum is σ = 2539019520. Its totient is φ = 366745392.

The previous prime is 1121397391. The next prime is 1121397439. The reversal of 1121397426 is 6247931211.

1121397426 is a `hidden beast` number, since 11 + 213 + 9 + 7 + 426 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193050 + ... + 198773.

It is an arithmetic number, because the mean of its divisors is an integer number (79344360).

Almost surely, 2^1121397426 is an apocalyptic number.

1121397426 is an abundant number, since it is smaller than the sum of its proper divisors (1417622094).

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

1121397426 is a wasteful number, since it uses less digits than its factorization.

1121397426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391887 (or 391881 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1121397426 is about 33487.2725972122. The cubic root of 1121397426 is about 1038.9305531396.

The spelling of 1121397426 in words is "one billion, one hundred twenty-one million, three hundred ninety-seven thousand, four hundred twenty-six".