71898242 has 16 divisors (see below), whose sum is σ = 122256960. Its totient is φ = 31437072.

The previous prime is 71898241. The next prime is 71898251. The reversal of 71898242 is 24289817.

It is a self number, because there is not a number n which added to its sum of digits gives 71898242.

It is not an unprimeable number, because it can be changed into a prime (71898241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72278 + ... + 73265.

It is an arithmetic number, because the mean of its divisors is an integer number (7641060).

Almost surely, 2^71898242 is an apocalyptic number.

71898242 is a deficient number, since it is larger than the sum of its proper divisors (50358718).

71898242 is a wasteful number, since it uses less digits than its factorization.

71898242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145577.

The product of its digits is 64512, while the sum is 41.

The square root of 71898242 is about 8479.2831064896. The cubic root of 71898242 is about 415.8206859401.

The spelling of 71898242 in words is "seventy-one million, eight hundred ninety-eight thousand, two hundred forty-two".