123481849 has 4 divisors (see below), whose sum is σ = 124614820. Its totient is φ = 122348880.

The previous prime is 123481843. The next prime is 123481861. The reversal of 123481849 is 948184321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48052624 + 75429225 = 6932^2 + 8685^2 .

It is a cyclic number.

It is not a de Polignac number, because 123481849 - 2¹⁹ = 122957561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123481843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566322 + ... + 566539.

It is an arithmetic number, because the mean of its divisors is an integer number (31153705).

Almost surely, 2^123481849 is an apocalyptic number.

It is an amenable number.

123481849 is a deficient number, since it is larger than the sum of its proper divisors (1132971).

123481849 is a wasteful number, since it uses less digits than its factorization.

123481849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132970.

The product of its digits is 55296, while the sum is 40.

The square root of 123481849 is about 11112.2387033397. The cubic root of 123481849 is about 497.9675481399.

The spelling of 123481849 in words is "one hundred twenty-three million, four hundred eighty-one thousand, eight hundred forty-nine".