203422430402 has 4 divisors (see below), whose sum is σ = 305133645606. Its totient is φ = 101711215200.

The previous prime is 203422430383. The next prime is 203422430441. The reversal of 203422430402 is 204034224302.

It is a happy number.

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., 142778935321 + 60643495081 = 377861^2 + 246259^2 .

It is a super-4 number, since 4×203422430402⁴ (a number of 46 digits) contains 4444 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 50855607599 + ... + 50855607602.

Almost surely, 2^203422430402 is an apocalyptic number.

203422430402 is a deficient number, since it is larger than the sum of its proper divisors (101711215204).

203422430402 is a wasteful number, since it uses less digits than its factorization.

203422430402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101711215203.

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 203422430402 its reverse (204034224302), we get a palindrome (407456654704).

The spelling of 203422430402 in words is "two hundred three billion, four hundred twenty-two million, four hundred thirty thousand, four hundred two".