42439282097 has 4 divisors (see below), whose sum is σ = 42440792100. Its totient is φ = 42437772096.

The previous prime is 42439282073. The next prime is 42439282111. The reversal of 42439282097 is 79028293424.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9447645601 + 32991636496 = 97199^2 + 181636^2 .

It is a cyclic number.

It is not a de Polignac number, because 42439282097 - 2¹² = 42439278001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42439282027) 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, 712028 + ... + 769325.

It is an arithmetic number, because the mean of its divisors is an integer number (10610198025).

Almost surely, 2^42439282097 is an apocalyptic number.

It is an amenable number.

42439282097 is a deficient number, since it is larger than the sum of its proper divisors (1510003).

42439282097 is a wasteful number, since it uses less digits than its factorization.

42439282097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510002.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 42439282097 in words is "forty-two billion, four hundred thirty-nine million, two hundred eighty-two thousand, ninety-seven".