42013260064 has 12 divisors (see below), whose sum is σ = 82713605814. Its totient is φ = 21006630016.

The previous prime is 42013260049. The next prime is 42013260071. The reversal of 42013260064 is 46006231024.

It can be written as a sum of positive squares in only one way, i.e., 41119728400 + 893531664 = 202780^2 + 29892^2 .

It is a super-2 number, since 2×42013260064² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656457157 + ... + 656457220.

Almost surely, 2^42013260064 is an apocalyptic number.

It is an amenable number.

42013260064 is a deficient number, since it is larger than the sum of its proper divisors (40700345750).

42013260064 is a wasteful number, since it uses less digits than its factorization.

42013260064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312914387 (or 1312914379 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 42013260064 its reverse (46006231024), we get a palindrome (88019491088).

The spelling of 42013260064 in words is "forty-two billion, thirteen million, two hundred sixty thousand, sixty-four".