144642669 has 8 divisors (see below), whose sum is σ = 197342112. Its totient is φ = 94185840.

The previous prime is 144642623. The next prime is 144642709. The reversal of 144642669 is 966246441.

144642669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 144642669 - 2⁸ = 144642413 is a prime.

It is a super-2 number, since 2×144642669² = 41843003390887122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144642669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144642569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560502 + ... + 560759.

It is an arithmetic number, because the mean of its divisors is an integer number (24667764).

Almost surely, 2^144642669 is an apocalyptic number.

It is an amenable number.

144642669 is a deficient number, since it is larger than the sum of its proper divisors (52699443).

144642669 is a wasteful number, since it uses less digits than its factorization.

144642669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121307.

The product of its digits is 248832, while the sum is 42.

The square root of 144642669 is about 12026.7480642109. The cubic root of 144642669 is about 524.9268759833.

The spelling of 144642669 in words is "one hundred forty-four million, six hundred forty-two thousand, six hundred sixty-nine".