20394042 has 8 divisors (see below), whose sum is σ = 40788096. Its totient is φ = 6798012.

The previous prime is 20394037. The next prime is 20394043. The reversal of 20394042 is 24049302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

20394042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20394043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1699498 + ... + 1699509.

It is an arithmetic number, because the mean of its divisors is an integer number (5098512).

Almost surely, 2^20394042 is an apocalyptic number.

20394042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20394042 is a wasteful number, since it uses less digits than its factorization.

20394042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399012.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20394042 is about 4515.9763064037. The cubic root of 20394042 is about 273.2128383561.

The spelling of 20394042 in words is "twenty million, three hundred ninety-four thousand, forty-two".