4042021252513 has 2 divisors, whose sum is σ = 4042021252514. Its totient is φ = 4042021252512.

The previous prime is 4042021252469. The next prime is 4042021252523. The reversal of 4042021252513 is 3152521202404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4009537678689 + 32483573824 = 2002383^2 + 180232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4042021252513 is a prime.

It is a super-2 number, since 2×4042021252513² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4042021252523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021010626256 + 2021010626257.

It is an arithmetic number, because the mean of its divisors is an integer number (2021010626257).

Almost surely, 2^{4042021252513} is an apocalyptic number.

It is an amenable number.

4042021252513 is a deficient number, since it is larger than the sum of its proper divisors (1).

4042021252513 is an equidigital number, since it uses as much as digits as its factorization.

4042021252513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 4042021252513 its reverse (3152521202404), we get a palindrome (7194542454917).

The spelling of 4042021252513 in words is "four trillion, forty-two billion, twenty-one million, two hundred fifty-two thousand, five hundred thirteen".