42143602 has 4 divisors (see below), whose sum is σ = 63215406. Its totient is φ = 21071800.

The previous prime is 42143599. The next prime is 42143609. The reversal of 42143602 is 20634124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42107121 + 36481 = 6489^2 + 191^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42143609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10535899 + ... + 10535902.

Almost surely, 2^42143602 is an apocalyptic number.

42143602 is a deficient number, since it is larger than the sum of its proper divisors (21071804).

42143602 is a wasteful number, since it uses less digits than its factorization.

42143602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21071803.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 42143602 is about 6491.8103792394. The cubic root of 42143602 is about 347.9983760439.

Adding to 42143602 its reverse (20634124), we get a palindrome (62777726).

The spelling of 42143602 in words is "forty-two million, one hundred forty-three thousand, six hundred two".