4240020 has 24 divisors (see below), whose sum is σ = 11872224. Its totient is φ = 1130656.

The previous prime is 4240007. The next prime is 4240037. The reversal of 4240020 is 200424.

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 = 4239978 and 4240005.

It is a congruent number.

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, 35274 + ... + 35393.

It is an arithmetic number, because the mean of its divisors is an integer number (494676).

Almost surely, 2^4240020 is an apocalyptic number.

It is an amenable number.

4240020 is an abundant number, since it is smaller than the sum of its proper divisors (7632204).

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

4240020 is a wasteful number, since it uses less digits than its factorization.

4240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70679 (or 70677 counting only the distinct ones).

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

The square root of 4240020 is about 2059.1308846210. The cubic root of 4240020 is about 161.8537011775.

Adding to 4240020 its reverse (200424), we get a palindrome (4440444).

The spelling of 4240020 in words is "four million, two hundred forty thousand, twenty".