203020042401 has 24 divisors (see below), whose sum is σ = 328556601984. Its totient is φ = 119716976160.

The previous prime is 203020042387. The next prime is 203020042439. The reversal of 203020042401 is 104240020302.

203020042401 is a `hidden beast` number, since 20 + 3 + 0 + 200 + 42 + 401 = 666.

It is not a de Polignac number, because 203020042401 - 2⁷ = 203020042273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203020042501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27708601 + ... + 27715926.

It is an arithmetic number, because the mean of its divisors is an integer number (13689858416).

Almost surely, 2^203020042401 is an apocalyptic number.

It is an amenable number.

203020042401 is a deficient number, since it is larger than the sum of its proper divisors (125536559583).

203020042401 is a wasteful number, since it uses less digits than its factorization.

203020042401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55424581 (or 55424578 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 203020042401 its reverse (104240020302), we get a palindrome (307260062703).

The spelling of 203020042401 in words is "two hundred three billion, twenty million, forty-two thousand, four hundred one".