1125144990 has 48 divisors (see below), whose sum is σ = 2943362448. Its totient is φ = 298194048.

The previous prime is 1125144973. The next prime is 1125145019. The reversal of 1125144990 is 994415211.

It is a happy number.

1125144990 is a `hidden beast` number, since 1 + 12 + 514 + 49 + 90 = 666.

It is a Curzon number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 23679 + ... + 53018.

It is an arithmetic number, because the mean of its divisors is an integer number (61320051).

Almost surely, 2^1125144990 is an apocalyptic number.

1125144990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1125144990 is an abundant number, since it is smaller than the sum of its proper divisors (1818217458).

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

1125144990 is a wasteful number, since it uses less digits than its factorization.

1125144990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76873 (or 76870 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1125144990 is about 33543.1809761686. The cubic root of 1125144990 is about 1040.0865898071.

The spelling of 1125144990 in words is "one billion, one hundred twenty-five million, one hundred forty-four thousand, nine hundred ninety".