42251526523 has 4 divisors (see below), whose sum is σ = 42275548480. Its totient is φ = 42227504568.

The previous prime is 42251526509. The next prime is 42251526619. The reversal of 42251526523 is 32562515224.

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

It is a cyclic number.

It is not a de Polignac number, because 42251526523 - 2⁵ = 42251526491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42251526323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12008340 + ... + 12011857.

It is an arithmetic number, because the mean of its divisors is an integer number (10568887120).

Almost surely, 2^42251526523 is an apocalyptic number.

42251526523 is a deficient number, since it is larger than the sum of its proper divisors (24021957).

42251526523 is a wasteful number, since it uses less digits than its factorization.

42251526523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24021956.

The product of its digits is 144000, while the sum is 37.

The spelling of 42251526523 in words is "forty-two billion, two hundred fifty-one million, five hundred twenty-six thousand, five hundred twenty-three".