148066421 has 2 divisors, whose sum is σ = 148066422. Its totient is φ = 148066420.

The previous prime is 148066417. The next prime is 148066423. The reversal of 148066421 is 124660841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91891396 + 56175025 = 9586^2 + 7495^2 .

It is a cyclic number.

It is not a de Polignac number, because 148066421 - 2² = 148066417 is a prime.

Together with 148066423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148066423) 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 as a sum of consecutive naturals, namely, 74033210 + 74033211.

It is an arithmetic number, because the mean of its divisors is an integer number (74033211).

Almost surely, 2^148066421 is an apocalyptic number.

It is an amenable number.

148066421 is a deficient number, since it is larger than the sum of its proper divisors (1).

148066421 is an equidigital number, since it uses as much as digits as its factorization.

148066421 is an odious number, because the sum of its binary digits is odd.

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

The square root of 148066421 is about 12168.2546406623. The cubic root of 148066421 is about 529.0363657710.

The spelling of 148066421 in words is "one hundred forty-eight million, sixty-six thousand, four hundred twenty-one".