4242020 has 24 divisors (see below), whose sum is σ = 8991864. Its totient is φ = 1680896.

The previous prime is 4242019. The next prime is 4242023. The reversal of 4242020 is 202424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14884 + 4227136 = 122^2 + 2056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4241986 and 4242004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242023) 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, 1322 + ... + 3198.

It is an arithmetic number, because the mean of its divisors is an integer number (374661).

Almost surely, 2^4242020 is an apocalyptic number.

It is an amenable number.

4242020 is an abundant number, since it is smaller than the sum of its proper divisors (4749844).

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

4242020 is a wasteful number, since it uses less digits than its factorization.

4242020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999 (or 1997 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 4242020 is about 2059.6164691515. The cubic root of 4242020 is about 161.8791457523.

Adding to 4242020 its reverse (202424), we get a palindrome (4444444).

The spelling of 4242020 in words is "four million, two hundred forty-two thousand, twenty".