42188834 has 4 divisors (see below), whose sum is σ = 63283254. Its totient is φ = 21094416.

The previous prime is 42188821. The next prime is 42188879. The reversal of 42188834 is 43888124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41280625 + 908209 = 6425^2 + 953^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10547207 + ... + 10547210.

Almost surely, 2^42188834 is an apocalyptic number.

42188834 is a deficient number, since it is larger than the sum of its proper divisors (21094420).

42188834 is a wasteful number, since it uses less digits than its factorization.

42188834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21094419.

The product of its digits is 49152, while the sum is 38.

The square root of 42188834 is about 6495.2932189394. The cubic root of 42188834 is about 348.1228317442.

The spelling of 42188834 in words is "forty-two million, one hundred eighty-eight thousand, eight hundred thirty-four".