204040430431442 has 32 divisors (see below), whose sum is σ = 334999915326720. Its totient is φ = 92436111366480.

The previous prime is 204040430431351. The next prime is 204040430431447. The reversal of 204040430431442 is 244134034040402.

It is a super-3 number, since 3×204040430431442³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (204040430431447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3323993 + ... + 20472659.

It is an arithmetic number, because the mean of its divisors is an integer number (10468747353960).

Almost surely, 2^{204040430431442} is an apocalyptic number.

204040430431442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

204040430431442 is a deficient number, since it is larger than the sum of its proper divisors (130959484895278).

204040430431442 is a wasteful number, since it uses less digits than its factorization.

204040430431442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17150486.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 204040430431442 its reverse (244134034040402), we get a palindrome (448174464471844).

The spelling of 204040430431442 in words is "two hundred four trillion, forty billion, four hundred thirty million, four hundred thirty-one thousand, four hundred forty-two".