203404342442 has 16 divisors (see below), whose sum is σ = 348879371712. Its totient is φ = 87126736320.

The previous prime is 203404342439. The next prime is 203404342451. The reversal of 203404342442 is 244243404302.

It is a junction number, because it is equal to n+sod(n) for n = 203404342399 and 203404342408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3852284 + ... + 3904727.

It is an arithmetic number, because the mean of its divisors is an integer number (21804960732).

Almost surely, 2^203404342442 is an apocalyptic number.

203404342442 is a deficient number, since it is larger than the sum of its proper divisors (145475029270).

203404342442 is a wasteful number, since it uses less digits than its factorization.

203404342442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7758893.

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 203404342442 its reverse (244243404302), we get a palindrome (447647746744).

The spelling of 203404342442 in words is "two hundred three billion, four hundred four million, three hundred forty-two thousand, four hundred forty-two".