42040222523 has 4 divisors (see below), whose sum is σ = 45274085808. Its totient is φ = 38806359240.

The previous prime is 42040222519. The next prime is 42040222579. The reversal of 42040222523 is 32522204024.

It is a happy number.

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 42040222523 - 2² = 42040222519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42040222492 and 42040222501.

It is not an unprimeable number, because it can be changed into a prime (42040222583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616931623 + ... + 1616931648.

It is an arithmetic number, because the mean of its divisors is an integer number (11318521452).

Almost surely, 2^42040222523 is an apocalyptic number.

42040222523 is a deficient number, since it is larger than the sum of its proper divisors (3233863285).

42040222523 is a wasteful number, since it uses less digits than its factorization.

42040222523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233863284.

The product of its (nonzero) digits is 7680, while the sum is 26.

Adding to 42040222523 its reverse (32522204024), we get a palindrome (74562426547).

The spelling of 42040222523 in words is "forty-two billion, forty million, two hundred twenty-two thousand, five hundred twenty-three".