142530442 has 8 divisors (see below), whose sum is σ = 216000036. Its totient is φ = 70530432.

The previous prime is 142530439. The next prime is 142530463. The reversal of 142530442 is 244035241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 140161921 + 2368521 = 11839^2 + 1539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367153 + ... + 367540.

Almost surely, 2^142530442 is an apocalyptic number.

142530442 is a deficient number, since it is larger than the sum of its proper divisors (73469594).

142530442 is an equidigital number, since it uses as much as digits as its factorization.

142530442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734792.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 142530442 is about 11938.6113932903. The cubic root of 142530442 is about 522.3591549739.

Adding to 142530442 its reverse (244035241), we get a palindrome (386565683).

The spelling of 142530442 in words is "one hundred forty-two million, five hundred thirty thousand, four hundred forty-two".