146442146 has 4 divisors (see below), whose sum is σ = 219663222. Its totient is φ = 73221072.

The previous prime is 146442143. The next prime is 146442193. The reversal of 146442146 is 641244641.

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., 143736121 + 2706025 = 11989^2 + 1645^2 .

It is not an unprimeable number, because it can be changed into a prime (146442143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36610535 + ... + 36610538.

Almost surely, 2^146442146 is an apocalyptic number.

146442146 is a deficient number, since it is larger than the sum of its proper divisors (73221076).

146442146 is an equidigital number, since it uses as much as digits as its factorization.

146442146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73221075.

The product of its digits is 18432, while the sum is 32.

The square root of 146442146 is about 12101.3282742020. The cubic root of 146442146 is about 527.0947552039.

Adding to 146442146 its reverse (641244641), we get a palindrome (787686787).

The spelling of 146442146 in words is "one hundred forty-six million, four hundred forty-two thousand, one hundred forty-six".