4521142 has 4 divisors (see below), whose sum is σ = 6781716. Its totient is φ = 2260570.

The previous prime is 4521113. The next prime is 4521151. The reversal of 4521142 is 2411254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2411254 = 2 ⋅1205627.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1130284 + ... + 1130287.

It is an arithmetic number, because the mean of its divisors is an integer number (1695429).

Almost surely, 2^4521142 is an apocalyptic number.

4521142 is a deficient number, since it is larger than the sum of its proper divisors (2260574).

4521142 is a wasteful number, since it uses less digits than its factorization.

4521142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260573.

The product of its digits is 320, while the sum is 19.

The square root of 4521142 is about 2126.2977213927. The cubic root of 4521142 is about 165.3545117179.

Adding to 4521142 its reverse (2411254), we get a palindrome (6932396).

The spelling of 4521142 in words is "four million, five hundred twenty-one thousand, one hundred forty-two".