202120394 has 24 divisors (see below), whose sum is σ = 357157440. Its totient is φ = 85523256.

The previous prime is 202120393. The next prime is 202120397. The reversal of 202120394 is 493021202.

202120394 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (202120393) 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 in 11 ways as a sum of consecutive naturals, for example, 5312 + ... + 20795.

It is an arithmetic number, because the mean of its divisors is an integer number (14881560).

Almost surely, 2^202120394 is an apocalyptic number.

202120394 is a deficient number, since it is larger than the sum of its proper divisors (155037046).

202120394 is a wasteful number, since it uses less digits than its factorization.

202120394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26202 (or 26195 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 202120394 is about 14216.9052187879. The cubic root of 202120394 is about 586.8629765872.

Adding to 202120394 its reverse (493021202), we get a palindrome (695141596).

The spelling of 202120394 in words is "two hundred two million, one hundred twenty thousand, three hundred ninety-four".