243420441401 has 16 divisors (see below), whose sum is σ = 261267768000. Its totient is φ = 226083394368.

The previous prime is 243420441361. The next prime is 243420441427. The reversal of 243420441401 is 104144024342.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243420441401 is a prime.

It is a super-2 number, since 2×243420441401² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243420441001) 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, 1223675 + ... + 1408623.

It is an arithmetic number, because the mean of its divisors is an integer number (16329235500).

Almost surely, 2^243420441401 is an apocalyptic number.

It is an amenable number.

243420441401 is a deficient number, since it is larger than the sum of its proper divisors (17847326599).

243420441401 is a wasteful number, since it uses less digits than its factorization.

243420441401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186328.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 243420441401 its reverse (104144024342), we get a palindrome (347564465743).

The spelling of 243420441401 in words is "two hundred forty-three billion, four hundred twenty million, four hundred forty-one thousand, four hundred one".