144419081 has 4 divisors (see below), whose sum is σ = 145821312. Its totient is φ = 143016852.

The previous prime is 144419053. The next prime is 144419089. The reversal of 144419081 is 180914441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180914441 = 29 ⋅6238429.

It is a cyclic number.

It is not a de Polignac number, because 144419081 - 2¹⁸ = 144156937 is a prime.

It is a super-2 number, since 2×144419081² = 41713741913769122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144419089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700961 + ... + 701166.

It is an arithmetic number, because the mean of its divisors is an integer number (36455328).

Almost surely, 2^144419081 is an apocalyptic number.

It is an amenable number.

144419081 is a deficient number, since it is larger than the sum of its proper divisors (1402231).

144419081 is a wasteful number, since it uses less digits than its factorization.

144419081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402230.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 144419081 is about 12017.4490221511. The cubic root of 144419081 is about 524.6562599462.

The spelling of 144419081 in words is "one hundred forty-four million, four hundred nineteen thousand, eighty-one".