204021342 has 48 divisors (see below), whose sum is σ = 523915392. Its totient is φ = 58290840.

The previous prime is 204021329. The next prime is 204021347. The reversal of 204021342 is 243120402.

204021342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204021347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26584 + ... + 33387.

It is an arithmetic number, because the mean of its divisors is an integer number (10914904).

Almost surely, 2^204021342 is an apocalyptic number.

204021342 is an abundant number, since it is smaller than the sum of its proper divisors (319894050).

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

204021342 is an equidigital number, since it uses as much as digits as its factorization.

204021342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59995 (or 59983 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 204021342 is about 14283.6039569851. The cubic root of 204021342 is about 588.6970596237.

Adding to 204021342 its reverse (243120402), we get a palindrome (447141744).

The spelling of 204021342 in words is "two hundred four million, twenty-one thousand, three hundred forty-two".