1125440423 has 8 divisors (see below), whose sum is σ = 1148899680. Its totient is φ = 1102142880.

The previous prime is 1125440387. The next prime is 1125440441. The reversal of 1125440423 is 3240445211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125440423 - 2¹⁴ = 1125424039 is a prime.

It is a super-2 number, since 2×1125440423² = 2533232291444837858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1125440392 and 1125440401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125440453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26315 + ... + 54252.

It is an arithmetic number, because the mean of its divisors is an integer number (143612460).

Almost surely, 2^1125440423 is an apocalyptic number.

1125440423 is a deficient number, since it is larger than the sum of its proper divisors (23459257).

1125440423 is an equidigital number, since it uses as much as digits as its factorization.

1125440423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80857.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1125440423 is about 33547.5844584972. The cubic root of 1125440423 is about 1040.1776148199.

Adding to 1125440423 its reverse (3240445211), we get a palindrome (4365885634).

The spelling of 1125440423 in words is "one billion, one hundred twenty-five million, four hundred forty thousand, four hundred twenty-three".