146543242 has 4 divisors (see below), whose sum is σ = 219814866. Its totient is φ = 73271620.

The previous prime is 146543239. The next prime is 146543261. The reversal of 146543242 is 242345641.

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., 144744961 + 1798281 = 12031^2 + 1341^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36635809 + ... + 36635812.

Almost surely, 2^146543242 is an apocalyptic number.

146543242 is a deficient number, since it is larger than the sum of its proper divisors (73271624).

146543242 is an equidigital number, since it uses as much as digits as its factorization.

146543242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73271623.

The product of its digits is 23040, while the sum is 31.

The square root of 146543242 is about 12105.5046156697. The cubic root of 146543242 is about 527.2160201887.

Adding to 146543242 its reverse (242345641), we get a palindrome (388888883).

The spelling of 146543242 in words is "one hundred forty-six million, five hundred forty-three thousand, two hundred forty-two".