620020842 has 32 divisors (see below), whose sum is σ = 1418995584. Its totient is φ = 176923200.

The previous prime is 620020837. The next prime is 620020879. The reversal of 620020842 is 248020026.

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, 25492 + ... + 43472.

It is an arithmetic number, because the mean of its divisors is an integer number (44343612).

Almost surely, 2^620020842 is an apocalyptic number.

620020842 is an abundant number, since it is smaller than the sum of its proper divisors (798974742).

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

620020842 is a wasteful number, since it uses less digits than its factorization.

620020842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18814.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 620020842 is about 24900.2177098916. The cubic root of 620020842 is about 852.7114530668.

Adding to 620020842 its reverse (248020026), we get a palindrome (868040868).

The spelling of 620020842 in words is "six hundred twenty million, twenty thousand, eight hundred forty-two".