1125841920 has 352 divisors, whose sum is σ = 4241515008. Its totient is φ = 249495552.

The previous prime is 1125841879. The next prime is 1125841931. The reversal of 1125841920 is 291485211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3978099 + ... + 3978381.

Almost surely, 2^1125841920 is an apocalyptic number.

1125841920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125841920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2120757504).

1125841920 is an abundant number, since it is smaller than the sum of its proper divisors (3115673088).

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

1125841920 is a wasteful number, since it uses less digits than its factorization.

1125841920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1125841920 is about 33553.5679175852. The cubic root of 1125841920 is about 1040.3012933759.

The spelling of 1125841920 in words is "one billion, one hundred twenty-five million, eight hundred forty-one thousand, nine hundred twenty".