42453520 has 20 divisors (see below), whose sum is σ = 98704620. Its totient is φ = 16981376.

The previous prime is 42453517. The next prime is 42453529. The reversal of 42453520 is 2535424.

It can be written as a sum of positive squares in 2 ways, for example, as 25280784 + 17172736 = 5028^2 + 4144^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (42453529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265255 + ... + 265414.

It is an arithmetic number, because the mean of its divisors is an integer number (4935231).

Almost surely, 2^42453520 is an apocalyptic number.

42453520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42453520 is an abundant number, since it is smaller than the sum of its proper divisors (56251100).

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

42453520 is a wasteful number, since it uses less digits than its factorization.

42453520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530682 (or 530676 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 42453520 is about 6515.6365767283. The cubic root of 42453520 is about 348.8493368614.

Adding to 42453520 its reverse (2535424), we get a palindrome (44988944).

The spelling of 42453520 in words is "forty-two million, four hundred fifty-three thousand, five hundred twenty".