42247065381 has 16 divisors (see below), whose sum is σ = 59972447808. Its totient is φ = 26361504000.

The previous prime is 42247065361. The next prime is 42247065407. The reversal of 42247065381 is 18356074224.

It is not a de Polignac number, because 42247065381 - 2⁷ = 42247065253 is a prime.

It is a super-2 number, since 2×42247065381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42247065361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2279095 + ... + 2297556.

It is an arithmetic number, because the mean of its divisors is an integer number (3748277988).

Almost surely, 2^42247065381 is an apocalyptic number.

It is an amenable number.

42247065381 is a deficient number, since it is larger than the sum of its proper divisors (17725382427).

42247065381 is a wasteful number, since it uses less digits than its factorization.

42247065381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576852.

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 42247065381 in words is "forty-two billion, two hundred forty-seven million, sixty-five thousand, three hundred eighty-one".