1420201020 has 48 divisors (see below), whose sum is σ = 4544644608. Its totient is φ = 324617280.

The previous prime is 1420201019. The next prime is 1420201031. The reversal of 1420201020 is 201020241.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1420200987 and 1420201005.

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, 1690296 + ... + 1691135.

It is an arithmetic number, because the mean of its divisors is an integer number (94680096).

Almost surely, 2^1420201020 is an apocalyptic number.

1420201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420201020 is an abundant number, since it is smaller than the sum of its proper divisors (3124443588).

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

1420201020 is a wasteful number, since it uses less digits than its factorization.

1420201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381450 (or 3381448 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1420201020 is about 37685.5545269006. The cubic root of 1420201020 is about 1124.0439007604.

Adding to 1420201020 its reverse (201020241), we get a palindrome (1621221261).

The spelling of 1420201020 in words is "one billion, four hundred twenty million, two hundred one thousand, twenty".