1420340020 has 48 divisors (see below), whose sum is σ = 3358849536. Its totient is φ = 499824000.

The previous prime is 1420340017. The next prime is 1420340063. The reversal of 1420340020 is 200430241.

It is a junction number, because it is equal to n+sod(n) for n = 1420339976 and 1420340003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97311 + ... + 110950.

It is an arithmetic number, because the mean of its divisors is an integer number (69976032).

Almost surely, 2^1420340020 is an apocalyptic number.

1420340020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420340020 is an abundant number, since it is smaller than the sum of its proper divisors (1938509516).

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

1420340020 is a wasteful number, since it uses less digits than its factorization.

1420340020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208312 (or 208310 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1420340020 is about 37687.3986897477. The cubic root of 1420340020 is about 1124.0805709226.

Adding to 1420340020 its reverse (200430241), we get a palindrome (1620770261).

The spelling of 1420340020 in words is "one billion, four hundred twenty million, three hundred forty thousand, twenty".