144921642 has 16 divisors (see below), whose sum is σ = 299838240. Its totient is φ = 46641392.

The previous prime is 144921611. The next prime is 144921659. The reversal of 144921642 is 246129441.

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 in 7 ways as a sum of consecutive naturals, for example, 416268 + ... + 416615.

It is an arithmetic number, because the mean of its divisors is an integer number (18739890).

Almost surely, 2^144921642 is an apocalyptic number.

144921642 is an abundant number, since it is smaller than the sum of its proper divisors (154916598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144921642 is a wasteful number, since it uses less digits than its factorization.

144921642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832917.

The product of its digits is 13824, while the sum is 33.

The square root of 144921642 is about 12038.3405002517. The cubic root of 144921642 is about 525.2641355678.

The spelling of 144921642 in words is "one hundred forty-four million, nine hundred twenty-one thousand, six hundred forty-two".