42521054453 has 8 divisors (see below), whose sum is σ = 44390854200. Its totient is φ = 40678158528.

The previous prime is 42521054447. The next prime is 42521054507. The reversal of 42521054453 is 35445012524.

It can be written as a sum of positive squares in 4 ways, for example, as 830765329 + 41690289124 = 28823^2 + 204182^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42521054453 - 2¹⁴ = 42521038069 is a prime.

It is a super-2 number, since 2×42521054453² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521054423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6722726 + ... + 6729047.

It is an arithmetic number, because the mean of its divisors is an integer number (5548856775).

Almost surely, 2^42521054453 is an apocalyptic number.

It is an amenable number.

42521054453 is a deficient number, since it is larger than the sum of its proper divisors (1869799747).

42521054453 is a wasteful number, since it uses less digits than its factorization.

42521054453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13451911.

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 42521054453 its reverse (35445012524), we get a palindrome (77966066977).

The spelling of 42521054453 in words is "forty-two billion, five hundred twenty-one million, fifty-four thousand, four hundred fifty-three".