203420202115 has 24 divisors (see below), whose sum is σ = 264490939440. Its totient is φ = 150124201344.

The previous prime is 203420202109. The next prime is 203420202143. The reversal of 203420202115 is 511202024302.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-203420202115 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1293709 + ... + 1442401.

It is an arithmetic number, because the mean of its divisors is an integer number (11020455810).

Almost surely, 2^203420202115 is an apocalyptic number.

203420202115 is a deficient number, since it is larger than the sum of its proper divisors (61070737325).

203420202115 is a wasteful number, since it uses less digits than its factorization.

203420202115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150343 (or 150330 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 203420202115 its reverse (511202024302), we get a palindrome (714622226417).

The spelling of 203420202115 in words is "two hundred three billion, four hundred twenty million, two hundred two thousand, one hundred fifteen".