1420421420 has 36 divisors (see below), whose sum is σ = 3278713872. Its totient is φ = 516516000.

The previous prime is 1420421411. The next prime is 1420421447. The reversal of 1420421420 is 241240241.

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 = 1420421392 and 1420421401.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291056 + ... + 295895.

Almost surely, 2^1420421420 is an apocalyptic number.

1420421420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420421420 is an abundant number, since it is smaller than the sum of its proper divisors (1858292452).

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

1420421420 is a wasteful number, since it uses less digits than its factorization.

1420421420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586982 (or 586969 counting only the distinct ones).

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

The square root of 1420421420 is about 37688.4786108434. The cubic root of 1420421420 is about 1124.1020442809.

Adding to 1420421420 its reverse (241240241), we get a palindrome (1661661661).

The spelling of 1420421420 in words is "one billion, four hundred twenty million, four hundred twenty-one thousand, four hundred twenty".