203242442407 has 16 divisors (see below), whose sum is σ = 221919897600. Its totient is φ = 185399232480.

The previous prime is 203242442393. The next prime is 203242442411. The reversal of 203242442407 is 704244242302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203242442407 is a prime.

It is a super-5 number, since 5×203242442407⁵ (a number of 58 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203242442467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300319 + ... + 704752.

It is an arithmetic number, because the mean of its divisors is an integer number (13869993600).

Almost surely, 2^203242442407 is an apocalyptic number.

203242442407 is a deficient number, since it is larger than the sum of its proper divisors (18677455193).

203242442407 is a wasteful number, since it uses less digits than its factorization.

203242442407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005486.

The product of its (nonzero) digits is 86016, while the sum is 34.

Adding to 203242442407 its reverse (704244242302), we get a palindrome (907486684709).

The spelling of 203242442407 in words is "two hundred three billion, two hundred forty-two million, four hundred forty-two thousand, four hundred seven".