4542542 has 4 divisors (see below), whose sum is σ = 6813816. Its totient is φ = 2271270.

The previous prime is 4542529. The next prime is 4542547. The reversal of 4542542 is 2452454.

It is a semiprime because it is the product of two primes.

It is a d-powerful number, because it can be written as 4⁵ + 5² + 4⁷ + 2¹⁸ + 5⁵ + 4⁸ + 2²² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4542547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135634 + ... + 1135637.

It is an arithmetic number, because the mean of its divisors is an integer number (1703454).

Almost surely, 2^4542542 is an apocalyptic number.

4542542 is a deficient number, since it is larger than the sum of its proper divisors (2271274).

4542542 is a wasteful number, since it uses less digits than its factorization.

4542542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271273.

The product of its digits is 6400, while the sum is 26.

The square root of 4542542 is about 2131.3240016478. The cubic root of 4542542 is about 165.6149929637.

Adding to 4542542 its reverse (2452454), we get a palindrome (6994996).

The spelling of 4542542 in words is "four million, five hundred forty-two thousand, five hundred forty-two".