42216452 has 12 divisors (see below), whose sum is σ = 74187036. Its totient is φ = 21020160.

The previous prime is 42216439. The next prime is 42216467. The reversal of 42216452 is 25461224.

It can be written as a sum of positive squares in 2 ways, for example, as 36675136 + 5541316 = 6056^2 + 2354^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20933 + ... + 22860.

It is an arithmetic number, because the mean of its divisors is an integer number (6182253).

Almost surely, 2^42216452 is an apocalyptic number.

It is an amenable number.

42216452 is a deficient number, since it is larger than the sum of its proper divisors (31970584).

42216452 is a wasteful number, since it uses less digits than its factorization.

42216452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44038 (or 44036 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 42216452 is about 6497.4188721368. The cubic root of 42216452 is about 348.1987788472.

Adding to 42216452 its reverse (25461224), we get a palindrome (67677676).

The spelling of 42216452 in words is "forty-two million, two hundred sixteen thousand, four hundred fifty-two".