144642345 has 32 divisors (see below), whose sum is σ = 244529280. Its totient is φ = 72806400.

The previous prime is 144642319. The next prime is 144642367. The reversal of 144642345 is 543246441.

It is a happy number.

It is not a de Polignac number, because 144642345 - 2⁸ = 144642089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89545 + ... + 91145.

It is an arithmetic number, because the mean of its divisors is an integer number (7641540).

Almost surely, 2^144642345 is an apocalyptic number.

144642345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144642345 is a deficient number, since it is larger than the sum of its proper divisors (99886935).

144642345 is a wasteful number, since it uses less digits than its factorization.

144642345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945.

The product of its digits is 46080, while the sum is 33.

The square root of 144642345 is about 12026.7345942280. The cubic root of 144642345 is about 524.9264840371.

Adding to 144642345 its reverse (543246441), we get a palindrome (687888786).

The spelling of 144642345 in words is "one hundred forty-four million, six hundred forty-two thousand, three hundred forty-five".