4021240404 has 24 divisors (see below), whose sum is σ = 9386350848. Its totient is φ = 1339919680.

The previous prime is 4021240319. The next prime is 4021240411. The reversal of 4021240404 is 4040421204.

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, 27012 + ... + 93659.

It is an arithmetic number, because the mean of its divisors is an integer number (391097952).

Almost surely, 2^4021240404 is an apocalyptic number.

It is an amenable number.

4021240404 is an abundant number, since it is smaller than the sum of its proper divisors (5365110444).

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

4021240404 is a wasteful number, since it uses less digits than its factorization.

4021240404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123455 (or 123453 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 4021240404 is about 63413.2510127024. The cubic root of 4021240404 is about 1590.2058465347.

Adding to 4021240404 its reverse (4040421204), we get a palindrome (8061661608).

The spelling of 4021240404 in words is "four billion, twenty-one million, two hundred forty thousand, four hundred four".