145544642 has 8 divisors (see below), whose sum is σ = 218368332. Its totient is φ = 72755200.

The previous prime is 145544627. The next prime is 145544647. The reversal of 145544642 is 246445541.

145544642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 142301041 + 3243601 = 11929^2 + 1801^2 .

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

It is not an unprimeable number, because it can be changed into a prime (145544647) 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 in 3 ways as a sum of consecutive naturals, for example, 11042 + ... + 20322.

Almost surely, 2^145544642 is an apocalyptic number.

145544642 is a deficient number, since it is larger than the sum of its proper divisors (72823690).

145544642 is an equidigital number, since it uses as much as digits as its factorization.

145544642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17124.

The product of its digits is 76800, while the sum is 35.

The square root of 145544642 is about 12064.1884103325. The cubic root of 145544642 is about 526.0157411666.

The spelling of 145544642 in words is "one hundred forty-five million, five hundred forty-four thousand, six hundred forty-two".