42145442134 has 4 divisors (see below), whose sum is σ = 63218163204. Its totient is φ = 21072721066.

The previous prime is 42145442117. The next prime is 42145442137. The reversal of 42145442134 is 43124454124.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42145442134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42145442137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10536360532 + ... + 10536360535.

It is an arithmetic number, because the mean of its divisors is an integer number (15804540801).

Almost surely, 2^42145442134 is an apocalyptic number.

42145442134 is a deficient number, since it is larger than the sum of its proper divisors (21072721070).

42145442134 is a wasteful number, since it uses less digits than its factorization.

42145442134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21072721069.

The product of its digits is 61440, while the sum is 34.

Adding to 42145442134 its reverse (43124454124), we get a palindrome (85269896258).

The spelling of 42145442134 in words is "forty-two billion, one hundred forty-five million, four hundred forty-two thousand, one hundred thirty-four".