148220249 has 2 divisors, whose sum is σ = 148220250. Its totient is φ = 148220248.

The previous prime is 148220243. The next prime is 148220251. The reversal of 148220249 is 942022841.

It is a happy number.

148220249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91489225 + 56731024 = 9565^2 + 7532^2 .

It is an emirp because it is prime and its reverse (942022841) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148220249 is a prime.

It is a Sophie Germain prime.

Together with 148220251, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (148220243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74110124 + 74110125.

It is an arithmetic number, because the mean of its divisors is an integer number (74110125).

Almost surely, 2^148220249 is an apocalyptic number.

It is an amenable number.

148220249 is a deficient number, since it is larger than the sum of its proper divisors (1).

148220249 is an equidigital number, since it uses as much as digits as its factorization.

148220249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 148220249 is about 12174.5738734462. The cubic root of 148220249 is about 529.2195097937.

The spelling of 148220249 in words is "one hundred forty-eight million, two hundred twenty thousand, two hundred forty-nine".