1125542110 has 128 divisors (see below), whose sum is σ = 2653544448. Its totient is φ = 333504000.

The previous prime is 1125542107. The next prime is 1125542123. The reversal of 1125542110 is 112455211.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1455684 + ... + 1456456.

It is an arithmetic number, because the mean of its divisors is an integer number (20730816).

Almost surely, 2^1125542110 is an apocalyptic number.

1125542110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1125542110 is an abundant number, since it is smaller than the sum of its proper divisors (1528002338).

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

1125542110 is a wasteful number, since it uses less digits than its factorization.

1125542110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1125542110 is about 33549.0999879281. The cubic root of 1125542110 is about 1040.2089416242.

Adding to 1125542110 its reverse (112455211), we get a palindrome (1237997321).

The spelling of 1125542110 in words is "one billion, one hundred twenty-five million, five hundred forty-two thousand, one hundred ten".