4542513021 has 16 divisors (see below), whose sum is σ = 6730830720. Its totient is φ = 3027810240.

The previous prime is 4542512993. The next prime is 4542513061. The reversal of 4542513021 is 1203152454.

It is not a de Polignac number, because 4542513021 - 2¹³ = 4542504829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4542513061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197061 + ... + 218901.

It is an arithmetic number, because the mean of its divisors is an integer number (420676920).

Almost surely, 2^4542513021 is an apocalyptic number.

It is an amenable number.

4542513021 is a deficient number, since it is larger than the sum of its proper divisors (2188317699).

4542513021 is a wasteful number, since it uses less digits than its factorization.

4542513021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29553 (or 29547 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 4542513021 is about 67398.1677866691. The cubic root of 4542513021 is about 1656.1464078443.

Adding to 4542513021 its reverse (1203152454), we get a palindrome (5745665475).

The spelling of 4542513021 in words is "four billion, five hundred forty-two million, five hundred thirteen thousand, twenty-one".