1040123003 has 4 divisors (see below), whose sum is σ = 1040377608. Its totient is φ = 1039868400.

The previous prime is 1040122999. The next prime is 1040123009. The reversal of 1040123003 is 3003210401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1040123003 - 2² = 1040122999 is a prime.

It is a super-2 number, since 2×1040123003² = 2163711722739476018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040123009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121073 + ... + 129378.

It is an arithmetic number, because the mean of its divisors is an integer number (260094402).

Almost surely, 2^1040123003 is an apocalyptic number.

1040123003 is a deficient number, since it is larger than the sum of its proper divisors (254605).

1040123003 is an equidigital number, since it uses as much as digits as its factorization.

1040123003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254604.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1040123003 is about 32250.9380173663. The cubic root of 1040123003 is about 1013.1993450809.

Adding to 1040123003 its reverse (3003210401), we get a palindrome (4043333404).

The spelling of 1040123003 in words is "one billion, forty million, one hundred twenty-three thousand, three".