123481249 has 4 divisors (see below), whose sum is σ = 123537940. Its totient is φ = 123424560.

The previous prime is 123481243. The next prime is 123481261. The reversal of 123481249 is 942184321.

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 53875600 + 69605649 = 7340^2 + 8343^2 .

It is a cyclic number.

It is not a de Polignac number, because 123481249 - 2¹¹ = 123479201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123481243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24942 + ... + 29479.

It is an arithmetic number, because the mean of its divisors is an integer number (30884485).

Almost surely, 2^123481249 is an apocalyptic number.

It is an amenable number.

123481249 is a deficient number, since it is larger than the sum of its proper divisors (56691).

123481249 is an equidigital number, since it uses as much as digits as its factorization.

123481249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56690.

The product of its digits is 13824, while the sum is 34.

The square root of 123481249 is about 11112.2117060466. The cubic root of 123481249 is about 497.9667415949.

The spelling of 123481249 in words is "one hundred twenty-three million, four hundred eighty-one thousand, two hundred forty-nine".