203400422322442 has 4 divisors (see below), whose sum is σ = 305100633483666. Its totient is φ = 101700211161220.

The previous prime is 203400422322407. The next prime is 203400422322521. The reversal of 203400422322442 is 244223224004302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 203124378213241 + 276044109201 = 14252171^2 + 525399^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203400422322398 and 203400422322407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50850105580609 + ... + 50850105580612.

Almost surely, 2^{203400422322442} is an apocalyptic number.

203400422322442 is a deficient number, since it is larger than the sum of its proper divisors (101700211161224).

203400422322442 is a wasteful number, since it uses less digits than its factorization.

203400422322442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101700211161223.

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 203400422322442 its reverse (244223224004302), we get a palindrome (447623646326744).

The spelling of 203400422322442 in words is "two hundred three trillion, four hundred billion, four hundred twenty-two million, three hundred twenty-two thousand, four hundred forty-two".