148078621 has 2 divisors, whose sum is σ = 148078622. Its totient is φ = 148078620.

The previous prime is 148078591. The next prime is 148078633. The reversal of 148078621 is 126870841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113103225 + 34975396 = 10635^2 + 5914^2 .

It is a cyclic number.

It is not a de Polignac number, because 148078621 - 2⁵ = 148078589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148078421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74039310 + 74039311.

It is an arithmetic number, because the mean of its divisors is an integer number (74039311).

Almost surely, 2^148078621 is an apocalyptic number.

It is an amenable number.

148078621 is a deficient number, since it is larger than the sum of its proper divisors (1).

148078621 is an equidigital number, since it uses as much as digits as its factorization.

148078621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 148078621 is about 12168.7559347700. The cubic root of 148078621 is about 529.0508954358.

The spelling of 148078621 in words is "one hundred forty-eight million, seventy-eight thousand, six hundred twenty-one".