123671449 has 4 divisors (see below), whose sum is σ = 134914320. Its totient is φ = 112428580.

The previous prime is 123671423. The next prime is 123671453. The reversal of 123671449 is 944176321.

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.

It is not a de Polignac number, because 123671449 - 2⁷ = 123671321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123671459) 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, 5621419 + ... + 5621440.

It is an arithmetic number, because the mean of its divisors is an integer number (33728580).

Almost surely, 2^123671449 is an apocalyptic number.

It is an amenable number.

123671449 is a deficient number, since it is larger than the sum of its proper divisors (11242871).

123671449 is a wasteful number, since it uses less digits than its factorization.

123671449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11242870.

The product of its digits is 36288, while the sum is 37.

The square root of 123671449 is about 11120.7665653047. The cubic root of 123671449 is about 498.2222856206. Note that the first 4 decimals are identical.

The spelling of 123671449 in words is "one hundred twenty-three million, six hundred seventy-one thousand, four hundred forty-nine".