42020620 has 24 divisors (see below), whose sum is σ = 88439904. Its totient is φ = 16770816.

The previous prime is 42020599. The next prime is 42020621. The reversal of 42020620 is 2602024.

It is a junction number, because it is equal to n+sod(n) for n = 42020594 and 42020603.

It is not an unprimeable number, because it can be changed into a prime (42020621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7972 + ... + 12148.

It is an arithmetic number, because the mean of its divisors is an integer number (3684996).

Almost surely, 2^42020620 is an apocalyptic number.

It is an amenable number.

42020620 is an abundant number, since it is smaller than the sum of its proper divisors (46419284).

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

42020620 is a wasteful number, since it uses less digits than its factorization.

42020620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4689 (or 4687 counting only the distinct ones).

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

The square root of 42020620 is about 6482.3313707338. The cubic root of 42020620 is about 347.6595406338.

Adding to 42020620 its reverse (2602024), we get a palindrome (44622644).

The spelling of 42020620 in words is "forty-two million, twenty thousand, six hundred twenty".