1002434123 has 4 divisors (see below), whose sum is σ = 1002913800. Its totient is φ = 1001954448.

The previous prime is 1002434119. The next prime is 1002434137. The reversal of 1002434123 is 3214342001.

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 1002434123 - 2² = 1002434119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002434095 and 1002434104.

It is not an unprimeable number, because it can be changed into a prime (1002434113) 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, 236690 + ... + 240887.

It is an arithmetic number, because the mean of its divisors is an integer number (250728450).

Almost surely, 2^1002434123 is an apocalyptic number.

1002434123 is a deficient number, since it is larger than the sum of its proper divisors (479677).

1002434123 is an equidigital number, since it uses as much as digits as its factorization.

1002434123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479676.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1002434123 is about 31661.2400736295. The cubic root of 1002434123 is about 1000.8107168938.

Adding to 1002434123 its reverse (3214342001), we get a palindrome (4216776124).

The spelling of 1002434123 in words is "one billion, two million, four hundred thirty-four thousand, one hundred twenty-three".