1423404256 has 24 divisors (see below), whose sum is σ = 2848270824. Its totient is φ = 700033920.

The previous prime is 1423404253. The next prime is 1423404263. The reversal of 1423404256 is 6524043241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423404253) 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, 362650 + ... + 366553.

It is an arithmetic number, because the mean of its divisors is an integer number (118677951).

Almost surely, 2^1423404256 is an apocalyptic number.

1423404256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1423404256 is an abundant number, since it is smaller than the sum of its proper divisors (1424866568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423404256 is an equidigital number, since it uses as much as digits as its factorization.

1423404256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729274 (or 729266 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1423404256 is about 37728.0301102509. The cubic root of 1423404256 is about 1124.8883526404. Note that the first 3 decimals are identical.

Adding to 1423404256 its reverse (6524043241), we get a palindrome (7947447497).

The spelling of 1423404256 in words is "one billion, four hundred twenty-three million, four hundred four thousand, two hundred fifty-six".