42490808469 has 16 divisors (see below), whose sum is σ = 62988101440. Its totient is φ = 28309765680.

The previous prime is 42490808447. The next prime is 42490808489. The reversal of 42490808469 is 96480809424.

42490808469 is a `hidden beast` number, since 424 + 9 + 0 + 80 + 84 + 69 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-42490808469 is a prime.

It is a super-2 number, since 2×42490808469² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42490808489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439702 + ... + 527559.

It is an arithmetic number, because the mean of its divisors is an integer number (3936756340).

Almost surely, 2^42490808469 is an apocalyptic number.

It is an amenable number.

42490808469 is a deficient number, since it is larger than the sum of its proper divisors (20497292971).

42490808469 is a wasteful number, since it uses less digits than its factorization.

42490808469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968897 (or 968891 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 42490808469 in words is "forty-two billion, four hundred ninety million, eight hundred eight thousand, four hundred sixty-nine".