42254502481 has 3 divisors (see below), whose sum is σ = 42254708041. Its totient is φ = 42254296922.

The previous prime is 42254502469. The next prime is 42254502487. The reversal of 42254502481 is 18420545224.

The square root of 42254502481 is 205559.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 42254502481 - 2¹⁵ = 42254469713 is a prime.

It is a super-2 number, since 2×42254502481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42254502481.

It is not an unprimeable number, because it can be changed into a prime (42254502487) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 102780 + ... + 308338.

Almost surely, 2^42254502481 is an apocalyptic number.

42254502481 is the 205559-th square number.

42254502481 is the 102780-th centered octagonal number.

It is an amenable number.

42254502481 is a deficient number, since it is larger than the sum of its proper divisors (205560).

42254502481 is an frugal number, since it uses more digits than its factorization.

42254502481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411118 (or 205559 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 37.

The spelling of 42254502481 in words is "forty-two billion, two hundred fifty-four million, five hundred two thousand, four hundred eighty-one".