4023138 has 16 divisors (see below), whose sum is σ = 9195840. Its totient is φ = 1149456.

The previous prime is 4023127. The next prime is 4023161. The reversal of 4023138 is 8313204.

It is a happy number.

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

It is a Curzon 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, 47853 + ... + 47936.

It is an arithmetic number, because the mean of its divisors is an integer number (574740).

Almost surely, 2^4023138 is an apocalyptic number.

4023138 is an abundant number, since it is smaller than the sum of its proper divisors (5172702).

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

4023138 is a wasteful number, since it uses less digits than its factorization.

4023138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95801.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4023138 is about 2005.7761589968. The cubic root of 4023138 is about 159.0455942974.

The spelling of 4023138 in words is "four million, twenty-three thousand, one hundred thirty-eight".