1420124420 has 96 divisors (see below), whose sum is σ = 3656136960. Its totient is φ = 455938560.

The previous prime is 1420124401. The next prime is 1420124423. The reversal of 1420124420 is 244210241.

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 = 1420124392 and 1420124401.

It is not an unprimeable number, because it can be changed into a prime (1420124423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54986 + ... + 76574.

It is an arithmetic number, because the mean of its divisors is an integer number (38084760).

Almost surely, 2^1420124420 is an apocalyptic number.

1420124420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1420124420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1828068480).

1420124420 is an abundant number, since it is smaller than the sum of its proper divisors (2236012540).

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

1420124420 is a wasteful number, since it uses less digits than its factorization.

1420124420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21645 (or 21643 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1420124420 is about 37684.5382086606. The cubic root of 1420124420 is about 1124.0236915765.

Adding to 1420124420 its reverse (244210241), we get a palindrome (1664334661).

The spelling of 1420124420 in words is "one billion, four hundred twenty million, one hundred twenty-four thousand, four hundred twenty".