42447981401 has 8 divisors (see below), whose sum is σ = 48523626240. Its totient is φ = 36375248448.

The previous prime is 42447981391. The next prime is 42447981421. The reversal of 42447981401 is 10418974424.

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

It is a de Polignac number, because none of the positive numbers 2^k-42447981401 is a prime.

It is a super-2 number, since 2×42447981401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42447981421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696641 + ... + 755118.

It is an arithmetic number, because the mean of its divisors is an integer number (6065453280).

Almost surely, 2^42447981401 is an apocalyptic number.

It is an amenable number.

42447981401 is a deficient number, since it is larger than the sum of its proper divisors (6075644839).

42447981401 is a wasteful number, since it uses less digits than its factorization.

42447981401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455943.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 42447981401 in words is "forty-two billion, four hundred forty-seven million, nine hundred eighty-one thousand, four hundred one".