42001083394 has 4 divisors (see below), whose sum is σ = 63001625094. Its totient is φ = 21000541696.

The previous prime is 42001083379. The next prime is 42001083401. The reversal of 42001083394 is 49338010024.

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., 41994255625 + 6827769 = 204925^2 + 2613^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500270847 + ... + 10500270850.

Almost surely, 2^42001083394 is an apocalyptic number.

42001083394 is a deficient number, since it is larger than the sum of its proper divisors (21000541700).

42001083394 is a wasteful number, since it uses less digits than its factorization.

42001083394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21000541699.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 42001083394 in words is "forty-two billion, one million, eighty-three thousand, three hundred ninety-four".