42523404543242 has 16 divisors (see below), whose sum is σ = 72897827042112. Its totient is φ = 18224175705120.

The previous prime is 42523404543241. The next prime is 42523404543287. The reversal of 42523404543242 is 24234540432524.

It is a junction number, because it is equal to n+sod(n) for n = 42523404543193 and 42523404543202.

It is not an unprimeable number, because it can be changed into a prime (42523404543241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9819683 + ... + 13471190.

It is an arithmetic number, because the mean of its divisors is an integer number (4556114190132).

Almost surely, 2^{42523404543242} is an apocalyptic number.

42523404543242 is a deficient number, since it is larger than the sum of its proper divisors (30374422498870).

42523404543242 is a wasteful number, since it uses less digits than its factorization.

42523404543242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23421293.

The product of its (nonzero) digits is 3686400, while the sum is 44.

Adding to 42523404543242 its reverse (24234540432524), we get a palindrome (66757944975766).

The spelling of 42523404543242 in words is "forty-two trillion, five hundred twenty-three billion, four hundred four million, five hundred forty-three thousand, two hundred forty-two".