42013352772 has 36 divisors (see below), whose sum is σ = 106793734320. Its totient is φ = 13926211632.

The previous prime is 42013352749. The next prime is 42013352807. The reversal of 42013352772 is 27725331024.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×42013352772² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3253438 + ... + 3266325.

It is an arithmetic number, because the mean of its divisors is an integer number (2966492620).

Almost surely, 2^42013352772 is an apocalyptic number.

It is an amenable number.

42013352772 is an abundant number, since it is smaller than the sum of its proper divisors (64780381548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42013352772 is a wasteful number, since it uses less digits than its factorization.

42013352772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6519952 (or 6519947 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

Adding to 42013352772 its reverse (27725331024), we get a palindrome (69738683796).

The spelling of 42013352772 in words is "forty-two billion, thirteen million, three hundred fifty-two thousand, seven hundred seventy-two".