144642838 has 16 divisors (see below), whose sum is σ = 226805760. Its totient is φ = 69100200.

The previous prime is 144642803. The next prime is 144642847. The reversal of 144642838 is 838246441.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 144642838.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9868 + ... + 19663.

It is an arithmetic number, because the mean of its divisors is an integer number (14175360).

Almost surely, 2^144642838 is an apocalyptic number.

144642838 is a deficient number, since it is larger than the sum of its proper divisors (82162922).

144642838 is a wasteful number, since it uses less digits than its factorization.

144642838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29643.

The product of its digits is 147456, while the sum is 40.

The square root of 144642838 is about 12026.7550902145. The cubic root of 144642838 is about 524.9270804241.

The spelling of 144642838 in words is "one hundred forty-four million, six hundred forty-two thousand, eight hundred thirty-eight".