4001424 has 40 divisors (see below), whose sum is σ = 11814720. Its totient is φ = 1143168.

The previous prime is 4001411. The next prime is 4001453. The reversal of 4001424 is 4241004.

It is a super-2 number, since 2×4001424² = 32022788055552, which contains 22 as substring.

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, 5619 + ... + 6290.

It is an arithmetic number, because the mean of its divisors is an integer number (295368).

Almost surely, 2^4001424 is an apocalyptic number.

It is an amenable number.

4001424 is an abundant number, since it is smaller than the sum of its proper divisors (7813296).

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

4001424 is a wasteful number, since it uses less digits than its factorization.

4001424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11927 (or 11921 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4001424 is about 2000.3559683216. The cubic root of 4001424 is about 158.7589401211.

Adding to 4001424 its reverse (4241004), we get a palindrome (8242428).

The spelling of 4001424 in words is "four million, one thousand, four hundred twenty-four".