1423242020 has 24 divisors (see below), whose sum is σ = 3061707768. Its totient is φ = 555411200.

The previous prime is 1423242011. The next prime is 1423242031. The reversal of 1423242020 is 202423241.

It can be written as a sum of positive squares in 4 ways, for example, as 51724864 + 1371517156 = 7192^2 + 37034^2 .

It is a super-3 number, since 3×1423242020³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1423241983 and 1423242001.

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, 867011 + ... + 868650.

It is an arithmetic number, because the mean of its divisors is an integer number (127571157).

Almost surely, 2^1423242020 is an apocalyptic number.

1423242020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423242020 is an abundant number, since it is smaller than the sum of its proper divisors (1638465748).

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

1423242020 is a wasteful number, since it uses less digits than its factorization.

1423242020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735711 (or 1735709 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1423242020 is about 37725.8799764830. The cubic root of 1423242020 is about 1124.8456137113.

Adding to 1423242020 its reverse (202423241), we get a palindrome (1625665261).

The spelling of 1423242020 in words is "one billion, four hundred twenty-three million, two hundred forty-two thousand, twenty".