84187742 has 16 divisors (see below), whose sum is σ = 127969200. Its totient is φ = 41534400.

The previous prime is 84187739. The next prime is 84187781. The reversal of 84187742 is 24778148.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 84187742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82109 + ... + 83127.

It is an arithmetic number, because the mean of its divisors is an integer number (7998075).

Almost surely, 2^84187742 is an apocalyptic number.

84187742 is a deficient number, since it is larger than the sum of its proper divisors (43781458).

84187742 is a wasteful number, since it uses less digits than its factorization.

84187742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

The product of its digits is 100352, while the sum is 41.

The square root of 84187742 is about 9175.3878392142. The cubic root of 84187742 is about 438.2779488625.

The spelling of 84187742 in words is "eighty-four million, one hundred eighty-seven thousand, seven hundred forty-two".