1253423423 has 8 divisors (see below), whose sum is σ = 1467422880. Its totient is φ = 1048158720.

The previous prime is 1253423419. The next prime is 1253423429. The reversal of 1253423423 is 3243243521.

It is a happy number.

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

It is not a de Polignac number, because 1253423423 - 2² = 1253423419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253423429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2183378 + ... + 2183951.

It is an arithmetic number, because the mean of its divisors is an integer number (183427860).

Almost surely, 2^1253423423 is an apocalyptic number.

1253423423 is a deficient number, since it is larger than the sum of its proper divisors (213999457).

1253423423 is an equidigital number, since it uses as much as digits as its factorization.

1253423423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367377.

The product of its digits is 17280, while the sum is 29.

The square root of 1253423423 is about 35403.7204683350. The cubic root of 1253423423 is about 1078.1998541186.

Adding to 1253423423 its reverse (3243243521), we get a palindrome (4496666944).

The spelling of 1253423423 in words is "one billion, two hundred fifty-three million, four hundred twenty-three thousand, four hundred twenty-three".