42194737 has 12 divisors (see below), whose sum is σ = 46450524. Its totient is φ = 38301120.

The previous prime is 42194693. The next prime is 42194741. The reversal of 42194737 is 73749124.

42194737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 19000881 + 23193856 = 4359^2 + 4816^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42194737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42194696 and 42194705.

It is not an unprimeable number, because it can be changed into a prime (42194777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8263 + ... + 12355.

It is an arithmetic number, because the mean of its divisors is an integer number (3870877).

Almost surely, 2^42194737 is an apocalyptic number.

It is an amenable number.

42194737 is a deficient number, since it is larger than the sum of its proper divisors (4255787).

42194737 is a wasteful number, since it uses less digits than its factorization.

42194737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180 (or 4167 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 42194737 is about 6495.7476090131. The cubic root of 42194737 is about 348.1390672663.

The spelling of 42194737 in words is "forty-two million, one hundred ninety-four thousand, seven hundred thirty-seven".