220123449 has 24 divisors (see below), whose sum is σ = 391332032. Its totient is φ = 116108640.

The previous prime is 220123411. The next prime is 220123451. The reversal of 220123449 is 944321022.

It is not a de Polignac number, because 220123449 - 2⁹ = 220122937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220123459) 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, 133567 + ... + 135204.

Almost surely, 2^220123449 is an apocalyptic number.

It is an amenable number.

220123449 is a deficient number, since it is larger than the sum of its proper divisors (171208583).

220123449 is a wasteful number, since it uses less digits than its factorization.

220123449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268797 (or 268794 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 220123449 is about 14836.5578555135. The cubic root of 220123449 is about 603.7939674525.

The spelling of 220123449 in words is "two hundred twenty million, one hundred twenty-three thousand, four hundred forty-nine".