42034394 has 4 divisors (see below), whose sum is σ = 63051594. Its totient is φ = 21017196.

The previous prime is 42034367. The next prime is 42034397. The reversal of 42034394 is 49343024.

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., 35557369 + 6477025 = 5963^2 + 2545^2 .

It is not an unprimeable number, because it can be changed into a prime (42034397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10508597 + ... + 10508600.

Almost surely, 2^42034394 is an apocalyptic number.

42034394 is a deficient number, since it is larger than the sum of its proper divisors (21017200).

42034394 is a wasteful number, since it uses less digits than its factorization.

42034394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21017199.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 42034394 is about 6483.3937100873. The cubic root of 42034394 is about 347.6975230924.

The spelling of 42034394 in words is "forty-two million, thirty-four thousand, three hundred ninety-four".