1420303240 has 32 divisors (see below), whose sum is σ = 3197295000. Its totient is φ = 567834624.

The previous prime is 1420303237. The next prime is 1420303273. The reversal of 1420303240 is 423030241.

It can be written as a sum of positive squares in 4 ways, for example, as 501849604 + 918453636 = 22402^2 + 30306^2 .

It is a super-2 number, since 2×1420303240² = 4034522587108995200, which contains 22 as substring.

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, 82936 + ... + 98584.

Almost surely, 2^1420303240 is an apocalyptic number.

1420303240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420303240 is an abundant number, since it is smaller than the sum of its proper divisors (1776991760).

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

1420303240 is a wasteful number, since it uses less digits than its factorization.

1420303240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17929 (or 17925 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1420303240 is about 37686.9107250780. The cubic root of 1420303240 is about 1124.0708680721.

Adding to 1420303240 its reverse (423030241), we get a palindrome (1843333481).

The spelling of 1420303240 in words is "one billion, four hundred twenty million, three hundred three thousand, two hundred forty".