42440342401 has 8 divisors (see below), whose sum is σ = 43458430400. Its totient is φ = 41423668272.

The previous prime is 42440342387. The next prime is 42440342411. The reversal of 42440342401 is 10424304424.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42440342401 is a prime.

It is a super-2 number, since 2×42440342401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42440342401.

It is not an unprimeable number, because it can be changed into a prime (42440342411) 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, 292590 + ... + 412903.

It is an arithmetic number, because the mean of its divisors is an integer number (5432303800).

Almost surely, 2^42440342401 is an apocalyptic number.

It is an amenable number.

42440342401 is a deficient number, since it is larger than the sum of its proper divisors (1018087999).

42440342401 is a wasteful number, since it uses less digits than its factorization.

42440342401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706935.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 42440342401 its reverse (10424304424), we get a palindrome (52864646825).

The spelling of 42440342401 in words is "forty-two billion, four hundred forty million, three hundred forty-two thousand, four hundred one".