8642434 has 16 divisors (see below), whose sum is σ = 13685760. Its totient is φ = 4084960.

The previous prime is 8642429. The next prime is 8642449. The reversal of 8642434 is 4342468.

8642434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 8642396 and 8642405.

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, 3039 + ... + 5149.

It is an arithmetic number, because the mean of its divisors is an integer number (855360).

Almost surely, 2^8642434 is an apocalyptic number.

8642434 is a deficient number, since it is larger than the sum of its proper divisors (5043326).

8642434 is a wasteful number, since it uses less digits than its factorization.

8642434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225.

The product of its digits is 18432, while the sum is 31.

The square root of 8642434 is about 2939.8016939923. The cubic root of 8642434 is about 205.2163806877.

Subtracting from 8642434 its sum of digits (31), we obtain a triangular number (8642403 = T₄₁₅₇).

The spelling of 8642434 in words is "eight million, six hundred forty-two thousand, four hundred thirty-four".