42434440231 has 16 divisors (see below), whose sum is σ = 46233513504. Its totient is φ = 38784282624.

The previous prime is 42434440199. The next prime is 42434440247. The reversal of 42434440231 is 13204443424.

It is a cyclic number.

It is not a de Polignac number, because 42434440231 - 2⁵ = 42434440199 is a prime.

It is a super-2 number, since 2×42434440231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42434440193 and 42434440202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42434440261) 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, 264471 + ... + 393463.

It is an arithmetic number, because the mean of its divisors is an integer number (2889594594).

Almost surely, 2^42434440231 is an apocalyptic number.

42434440231 is a deficient number, since it is larger than the sum of its proper divisors (3799073273).

42434440231 is a wasteful number, since it uses less digits than its factorization.

42434440231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129570.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 42434440231 its reverse (13204443424), we get a palindrome (55638883655).

The spelling of 42434440231 in words is "forty-two billion, four hundred thirty-four million, four hundred forty thousand, two hundred thirty-one".