42440164231 has 8 divisors (see below), whose sum is σ = 43908796800. Its totient is φ = 40971876960.

The previous prime is 42440164223. The next prime is 42440164241. The reversal of 42440164231 is 13246104424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42440164231 - 2³ = 42440164223 is a prime.

It is a super-2 number, since 2×42440164231² (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 = 42440164193 and 42440164202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440164201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177450 + ... + 341128.

It is an arithmetic number, because the mean of its divisors is an integer number (5488599600).

Almost surely, 2^42440164231 is an apocalyptic number.

42440164231 is a deficient number, since it is larger than the sum of its proper divisors (1468632569).

42440164231 is a wasteful number, since it uses less digits than its factorization.

42440164231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172649.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 42440164231 its reverse (13246104424), we get a palindrome (55686268655).

The spelling of 42440164231 in words is "forty-two billion, four hundred forty million, one hundred sixty-four thousand, two hundred thirty-one".