42000452 has 24 divisors (see below), whose sum is σ = 80458392. Its totient is φ = 19065600.

The previous prime is 42000419. The next prime is 42000457. The reversal of 42000452 is 25400024.

It can be written as a sum of positive squares in 4 ways, for example, as 2637376 + 39363076 = 1624^2 + 6274^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42000452.

It is not an unprimeable number, because it can be changed into a prime (42000457) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3449 + ... + 9792.

It is an arithmetic number, because the mean of its divisors is an integer number (3352433).

Almost surely, 2^42000452 is an apocalyptic number.

It is an amenable number.

42000452 is a deficient number, since it is larger than the sum of its proper divisors (38457940).

42000452 is a wasteful number, since it uses less digits than its factorization.

42000452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13319 (or 13317 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 42000452 is about 6480.7755708711. The cubic root of 42000452 is about 347.6039114398.

Adding to 42000452 its reverse (25400024), we get a palindrome (67400476).

The spelling of 42000452 in words is "forty-two million, four hundred fifty-two", and thus it is an aban number.