4540042 has 8 divisors (see below), whose sum is σ = 7333956. Its totient is φ = 2095392.

The previous prime is 4540027. The next prime is 4540049. The reversal of 4540042 is 2400454.

It can be written as a sum of positive squares in 2 ways, for example, as 4289041 + 251001 = 2071^2 + 501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4540042² = 41223962723528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4540049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87283 + ... + 87334.

Almost surely, 2^4540042 is an apocalyptic number.

4540042 is a deficient number, since it is larger than the sum of its proper divisors (2793914).

4540042 is a wasteful number, since it uses less digits than its factorization.

4540042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174632.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 4540042 is about 2130.7374310318. The cubic root of 4540042 is about 165.5846051719.

Adding to 4540042 its reverse (2400454), we get a palindrome (6940496).

The spelling of 4540042 in words is "four million, five hundred forty thousand, forty-two".