1423242420 has 24 divisors (see below), whose sum is σ = 3985078944. Its totient is φ = 379531296.

The previous prime is 1423242413. The next prime is 1423242437. The reversal of 1423242420 is 242423241.

It is a super-3 number, since 3×1423242420³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11860294 + ... + 11860413.

It is an arithmetic number, because the mean of its divisors is an integer number (166044956).

Almost surely, 2^1423242420 is an apocalyptic number.

1423242420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423242420 is an abundant number, since it is smaller than the sum of its proper divisors (2561836524).

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

1423242420 is a wasteful number, since it uses less digits than its factorization.

1423242420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23720719 (or 23720717 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1423242420 is about 37725.8852778831. The cubic root of 1423242420 is about 1124.8457190900.

Adding to 1423242420 its reverse (242423241), we get a palindrome (1665665661).

The spelling of 1423242420 in words is "one billion, four hundred twenty-three million, two hundred forty-two thousand, four hundred twenty".