1045145123 has 16 divisors (see below), whose sum is σ = 1189265760. Its totient is φ = 917334880.

The previous prime is 1045145119. The next prime is 1045145131. The reversal of 1045145123 is 3215415401.

1045145123 = 6882² + 6883² + ... + 6903².

It is not a de Polignac number, because 1045145123 - 2² = 1045145119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1045145092 and 1045145101.

It is not an unprimeable number, because it can be changed into a prime (1045145113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25061 + ... + 52137.

It is an arithmetic number, because the mean of its divisors is an integer number (74329110).

Almost surely, 2^1045145123 is an apocalyptic number.

1045145123 is a deficient number, since it is larger than the sum of its proper divisors (144120637).

1045145123 is an equidigital number, since it uses as much as digits as its factorization.

1045145123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27139 (or 27117 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1045145123 is about 32328.7043198455. The cubic root of 1045145123 is about 1014.8274348901.

The spelling of 1045145123 in words is "one billion, forty-five million, one hundred forty-five thousand, one hundred twenty-three".