123149447 has 8 divisors (see below), whose sum is σ = 125931456. Its totient is φ = 120374272.

The previous prime is 123149443. The next prime is 123149471. The reversal of 123149447 is 744941321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123149447 - 2² = 123149443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123149443) 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, 56123 + ... + 58275.

It is an arithmetic number, because the mean of its divisors is an integer number (15741432).

Almost surely, 2^123149447 is an apocalyptic number.

123149447 is a deficient number, since it is larger than the sum of its proper divisors (2782009).

123149447 is a wasteful number, since it uses less digits than its factorization.

123149447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417.

The product of its digits is 24192, while the sum is 35.

The square root of 123149447 is about 11097.2720521757. The cubic root of 123149447 is about 497.5203186907.

The spelling of 123149447 in words is "one hundred twenty-three million, one hundred forty-nine thousand, four hundred forty-seven".