248121149 has 4 divisors (see below), whose sum is σ = 254827164. Its totient is φ = 241415136.

The previous prime is 248121127. The next prime is 248121191. The reversal of 248121149 is 941121842.

It is a happy number.

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 193627225 + 54493924 = 13915^2 + 7382^2 .

It is a cyclic number.

It is not a de Polignac number, because 248121149 - 2¹² = 248117053 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 (248121119) 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, 3352952 + ... + 3353025.

It is an arithmetic number, because the mean of its divisors is an integer number (63706791).

Almost surely, 2^248121149 is an apocalyptic number.

It is an amenable number.

248121149 is a deficient number, since it is larger than the sum of its proper divisors (6706015).

248121149 is an equidigital number, since it uses as much as digits as its factorization.

248121149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706014.

The product of its digits is 4608, while the sum is 32.

The square root of 248121149 is about 15751.8617629790. The cubic root of 248121149 is about 628.3784189650.

The spelling of 248121149 in words is "two hundred forty-eight million, one hundred twenty-one thousand, one hundred forty-nine".