42123404522 has 8 divisors (see below), whose sum is σ = 63646312356. Its totient is φ = 20907967072.

The previous prime is 42123404509. The next prime is 42123404549. The reversal of 42123404522 is 22540432124.

It can be written as a sum of positive squares in 2 ways, for example, as 34994810761 + 7128593761 = 187069^2 + 84431^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76867253 + ... + 76867800.

Almost surely, 2^42123404522 is an apocalyptic number.

42123404522 is a deficient number, since it is larger than the sum of its proper divisors (21522907834).

42123404522 is a wasteful number, since it uses less digits than its factorization.

42123404522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153735192.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 42123404522 its reverse (22540432124), we get a palindrome (64663836646).

The spelling of 42123404522 in words is "forty-two billion, one hundred twenty-three million, four hundred four thousand, five hundred twenty-two".