1423123420 has 24 divisors (see below), whose sum is σ = 2989302624. Its totient is φ = 569107776.

The previous prime is 1423123411. The next prime is 1423123423. The reversal of 1423123420 is 243213241.

1423123420 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1423123391 and 1423123400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423123423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117697 + ... + 129223.

It is an arithmetic number, because the mean of its divisors is an integer number (124554276).

Almost surely, 2^1423123420 is an apocalyptic number.

1423123420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423123420 is an abundant number, since it is smaller than the sum of its proper divisors (1566179204).

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

1423123420 is a wasteful number, since it uses less digits than its factorization.

1423123420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17709 (or 17707 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1423123420 is about 37724.3080784791. The cubic root of 1423123420 is about 1124.8143680544.

Adding to 1423123420 its reverse (243213241), we get a palindrome (1666336661).

The spelling of 1423123420 in words is "one billion, four hundred twenty-three million, one hundred twenty-three thousand, four hundred twenty".