1420430256 has 180 divisors, whose sum is σ = 4720058512. Its totient is φ = 405627264.

The previous prime is 1420430213. The next prime is 1420430293. The reversal of 1420430256 is 6520340241.

It is a super-2 number, since 2×1420430256² = 4035244224320451072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 733866 + ... + 735798.

Almost surely, 2^1420430256 is an apocalyptic number.

1420430256 is a gapful number since it is divisible by the number (16) 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 1420430256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2360029256).

1420430256 is an abundant number, since it is smaller than the sum of its proper divisors (3299628256).

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

1420430256 is an frugal number, since it uses more digits than its factorization.

1420430256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972 (or 1945 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1420430256 is about 37688.5958348145. The cubic root of 1420430256 is about 1124.1043751725.

Adding to 1420430256 its reverse (6520340241), we get a palindrome (7940770497).

The spelling of 1420430256 in words is "one billion, four hundred twenty million, four hundred thirty thousand, two hundred fifty-six".