4023642 has 16 divisors (see below), whose sum is σ = 9196992. Its totient is φ = 1149600.

The previous prime is 4023631. The next prime is 4023653. The reversal of 4023642 is 2463204.

It is an interprime number because it is at equal distance from previous prime (4023631) and next prime (4023653).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47859 + ... + 47942.

It is an arithmetic number, because the mean of its divisors is an integer number (574812).

Almost surely, 2^4023642 is an apocalyptic number.

4023642 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

4023642 is an abundant number, since it is smaller than the sum of its proper divisors (5173350).

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

4023642 is a wasteful number, since it uses less digits than its factorization.

4023642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95813.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4023642 is about 2005.9017922122. The cubic root of 4023642 is about 159.0522355173.

Adding to 4023642 its reverse (2463204), we get a palindrome (6486846).

The spelling of 4023642 in words is "four million, twenty-three thousand, six hundred forty-two".