1002423123 has 24 divisors (see below), whose sum is σ = 1575418208. Its totient is φ = 610509312.

The previous prime is 1002423083. The next prime is 1002423143. The reversal of 1002423123 is 3213242001.

It is not a de Polignac number, because 1002423123 - 2¹⁴ = 1002406739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002423096 and 1002423105.

It is not an unprimeable number, because it can be changed into a prime (1002423143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32815 + ... + 55512.

Almost surely, 2^1002423123 is an apocalyptic number.

1002423123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1002423123 is a deficient number, since it is larger than the sum of its proper divisors (572995085).

1002423123 is a wasteful number, since it uses less digits than its factorization.

1002423123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88443 (or 88440 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1002423123 is about 31661.0663591737. The cubic root of 1002423123 is about 1000.8070561518.

Adding to 1002423123 its reverse (3213242001), we get a palindrome (4215665124).

The spelling of 1002423123 in words is "one billion, two million, four hundred twenty-three thousand, one hundred twenty-three".