42816897123 has 48 divisors (see below), whose sum is σ = 78020038656. Its totient is φ = 20531568960.

The previous prime is 42816897121. The next prime is 42816897191. The reversal of 42816897123 is 32179861824.

It is a happy number.

It is not a de Polignac number, because 42816897123 - 2¹ = 42816897121 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (42816897121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 997411 + ... + 1039452.

It is an arithmetic number, because the mean of its divisors is an integer number (1625417472).

Almost surely, 2^42816897123 is an apocalyptic number.

42816897123 is a deficient number, since it is larger than the sum of its proper divisors (35203141533).

42816897123 is a wasteful number, since it uses less digits than its factorization.

42816897123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036904 (or 2036897 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

It can be divided in two parts, 42816 and 897123, that added together give a palindrome (939939).

The spelling of 42816897123 in words is "forty-two billion, eight hundred sixteen million, eight hundred ninety-seven thousand, one hundred twenty-three".