5042403021 has 4 divisors (see below), whose sum is σ = 6723204032. Its totient is φ = 3361602012.

The previous prime is 5042402993. The next prime is 5042403061. The reversal of 5042403021 is 1203042405.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5042403021 - 2¹⁹ = 5041878733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5042403061) 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, 840400501 + ... + 840400506.

It is an arithmetic number, because the mean of its divisors is an integer number (1680801008).

Almost surely, 2^5042403021 is an apocalyptic number.

It is an amenable number.

5042403021 is a deficient number, since it is larger than the sum of its proper divisors (1680801011).

5042403021 is a wasteful number, since it uses less digits than its factorization.

5042403021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680801010.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 5042403021 is about 71009.8797421880. The cubic root of 5042403021 is about 1714.7962223632.

Adding to 5042403021 its reverse (1203042405), we get a palindrome (6245445426).

The spelling of 5042403021 in words is "five billion, forty-two million, four hundred three thousand, twenty-one".