42022020 has 24 divisors (see below), whose sum is σ = 117661824. Its totient is φ = 11205856.

The previous prime is 42021997. The next prime is 42022031. The reversal of 42022020 is 2022024.

It is a happy number.

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 = 42021987 and 42022005.

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, 350124 + ... + 350243.

It is an arithmetic number, because the mean of its divisors is an integer number (4902576).

Almost surely, 2^42022020 is an apocalyptic number.

It is an amenable number.

42022020 is an abundant number, since it is smaller than the sum of its proper divisors (75639804).

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

42022020 is a wasteful number, since it uses less digits than its factorization.

42022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700379 (or 700377 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 42022020 is about 6482.4393556747. The cubic root of 42022020 is about 347.6634015791.

Adding to 42022020 its reverse (2022024), we get a palindrome (44044044).

The spelling of 42022020 in words is "forty-two million, twenty-two thousand, twenty".