42426919064 has 32 divisors (see below), whose sum is σ = 81609096240. Its totient is φ = 20665996800.

The previous prime is 42426919039. The next prime is 42426919097. The reversal of 42426919064 is 46091962424.

It is a happy number.

It is a super-2 number, since 2×42426919064² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 133052 + ... + 320244.

Almost surely, 2^42426919064 is an apocalyptic number.

It is an amenable number.

42426919064 is a deficient number, since it is larger than the sum of its proper divisors (39182177176).

42426919064 is a wasteful number, since it uses less digits than its factorization.

42426919064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187931 (or 187927 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 42426919064 in words is "forty-two billion, four hundred twenty-six million, nine hundred nineteen thousand, sixty-four".