1420639612 has 54 divisors (see below), whose sum is σ = 3025465352. Its totient is φ = 571663488.

The previous prime is 1420639543. The next prime is 1420639637. The reversal of 1420639612 is 2169360241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3390339 + ... + 3390757.

Almost surely, 2^1420639612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1420639612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1512732676).

1420639612 is an abundant number, since it is smaller than the sum of its proper divisors (1604825740).

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

1420639612 is an equidigital number, since it uses as much as digits as its factorization.

1420639612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1420639612 is about 37691.3731774262. The cubic root of 1420639612 is about 1124.1595993867.

Adding to 1420639612 its reverse (2169360241), we get a palindrome (3589999853).

The spelling of 1420639612 in words is "one billion, four hundred twenty million, six hundred thirty-nine thousand, six hundred twelve".