42521063254 has 4 divisors (see below), whose sum is σ = 63781594884. Its totient is φ = 21260531626.

The previous prime is 42521063237. The next prime is 42521063257. The reversal of 42521063254 is 45236012524.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521063257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10630265812 + ... + 10630265815.

It is an arithmetic number, because the mean of its divisors is an integer number (15945398721).

Almost surely, 2^42521063254 is an apocalyptic number.

42521063254 is a deficient number, since it is larger than the sum of its proper divisors (21260531630).

42521063254 is a wasteful number, since it uses less digits than its factorization.

42521063254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21260531629.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 42521063254 its reverse (45236012524), we get a palindrome (87757075778).

The spelling of 42521063254 in words is "forty-two billion, five hundred twenty-one million, sixty-three thousand, two hundred fifty-four".