1125642804 has 96 divisors (see below), whose sum is σ = 3129477120. Its totient is φ = 310396800.

The previous prime is 1125642787. The next prime is 1125642851. The reversal of 1125642804 is 4082465211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 117217 + ... + 126455.

It is an arithmetic number, because the mean of its divisors is an integer number (32598720).

Almost surely, 2^1125642804 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 1125642804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1564738560).

1125642804 is an abundant number, since it is smaller than the sum of its proper divisors (2003834316).

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

1125642804 is a wasteful number, since it uses less digits than its factorization.

1125642804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9341 (or 9339 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 1125642804 is about 33550.6006503609. The cubic root of 1125642804 is about 1040.2399606549.

The spelling of 1125642804 in words is "one billion, one hundred twenty-five million, six hundred forty-two thousand, eight hundred four".