1125292123 has 4 divisors (see below), whose sum is σ = 1125405648. Its totient is φ = 1125178600.

The previous prime is 1125292121. The next prime is 1125292127. The reversal of 1125292123 is 3212925211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3212925211 = 2789 ⋅1151999.

It is a cyclic number.

It is not a de Polignac number, because 1125292123 - 2¹ = 1125292121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1125292091 and 1125292100.

It is not an unprimeable number, because it can be changed into a prime (1125292121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 40303 + ... + 62248.

It is an arithmetic number, because the mean of its divisors is an integer number (281351412).

Almost surely, 2^1125292123 is an apocalyptic number.

1125292123 is a deficient number, since it is larger than the sum of its proper divisors (113525).

1125292123 is a wasteful number, since it uses less digits than its factorization.

1125292123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113524.

The product of its digits is 2160, while the sum is 28.

The square root of 1125292123 is about 33545.3740924140. The cubic root of 1125292123 is about 1040.1319245245.

The spelling of 1125292123 in words is "one billion, one hundred twenty-five million, two hundred ninety-two thousand, one hundred twenty-three".