42547945472 has 126 divisors (see below), whose sum is σ = 88790273397. Its totient is φ = 20387168256.

The previous prime is 42547945471. The next prime is 42547945493. The reversal of 42547945472 is 27454974524.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 40359202816 + 2188742656 = 200896^2 + 46784^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145856.

It is a Harshad number since it is a multiple of its sum of digits (53).

Its product of digits (11289600) is a multiple of the sum of its prime divisors (98).

It is not an unprimeable number, because it can be changed into a prime (42547945471) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 802791398 + ... + 802791450.

Almost surely, 2^42547945472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42547945472

42547945472 is an abundant number, since it is smaller than the sum of its proper divisors (46242327925).

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

42547945472 is an frugal number, since it uses more digits than its factorization.

42547945472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 98 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 53.

The spelling of 42547945472 in words is "forty-two billion, five hundred forty-seven million, nine hundred forty-five thousand, four hundred seventy-two".