84469542242 has 18 divisors (see below), whose sum is σ = 127642757697. Its totient is φ = 41924244000.

The previous prime is 84469542221. The next prime is 84469542247. The reversal of 84469542242 is 24224596448.

It can be written as a sum of positive squares in 2 ways, for example, as 73957346401 + 10512195841 = 271951^2 + 102529^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=205511.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84469542247) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 62063642 + ... + 62065002.

Almost surely, 2^84469542242 is an apocalyptic number.

84469542242 is a deficient number, since it is larger than the sum of its proper divisors (43173215455).

84469542242 is an frugal number, since it uses more digits than its factorization.

84469542242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026 (or 1514 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 50.

Multiplying 84469542242 by its sum of digits (50), we get a square (4223477112100 = 2055110²).

The spelling of 84469542242 in words is "eighty-four billion, four hundred sixty-nine million, five hundred forty-two thousand, two hundred forty-two".