144092221 has 24 divisors (see below), whose sum is σ = 188424320. Its totient is φ = 107281152.

The previous prime is 144092191. The next prime is 144092227. The reversal of 144092221 is 122290441.

144092221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-144092221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144092227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23560 + ... + 29038.

Almost surely, 2^144092221 is an apocalyptic number.

It is an amenable number.

144092221 is a deficient number, since it is larger than the sum of its proper divisors (44332099).

144092221 is a wasteful number, since it uses less digits than its factorization.

144092221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533 (or 5516 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 144092221 is about 12003.8419266500. The cubic root of 144092221 is about 524.2601472753.

The spelling of 144092221 in words is "one hundred forty-four million, ninety-two thousand, two hundred twenty-one".