144021469 has 8 divisors (see below), whose sum is σ = 150413760. Its totient is φ = 137640096.

The previous prime is 144021461. The next prime is 144021473. The reversal of 144021469 is 964120441.

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

It is not a de Polignac number, because 144021469 - 2³ = 144021461 is a prime.

It is a super-2 number, since 2×144021469² = 41484367065835922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144021469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144021461) 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, 36222 + ... + 40000.

It is an arithmetic number, because the mean of its divisors is an integer number (18801720).

Almost surely, 2^144021469 is an apocalyptic number.

It is an amenable number.

144021469 is a deficient number, since it is larger than the sum of its proper divisors (6392291).

144021469 is a wasteful number, since it uses less digits than its factorization.

144021469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 144021469 is about 12000.8945083273. The cubic root of 144021469 is about 524.1743260182.

The spelling of 144021469 in words is "one hundred forty-four million, twenty-one thousand, four hundred sixty-nine".