148434721 has 2 divisors, whose sum is σ = 148434722. Its totient is φ = 148434720.

The previous prime is 148434641. The next prime is 148434733. The reversal of 148434721 is 127434841.

It is a happy number.

148434721 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., 145323025 + 3111696 = 12055^2 + 1764^2 .

It is a cyclic number.

It is not a de Polignac number, because 148434721 - 2¹³ = 148426529 is a prime.

It is not a weakly prime, because it can be changed into another prime (148434761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74217360 + 74217361.

It is an arithmetic number, because the mean of its divisors is an integer number (74217361).

Almost surely, 2^148434721 is an apocalyptic number.

It is an amenable number.

148434721 is a deficient number, since it is larger than the sum of its proper divisors (1).

148434721 is an equidigital number, since it uses as much as digits as its factorization.

148434721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 34.

The square root of 148434721 is about 12183.3788827238. The cubic root of 148434721 is about 529.4746437716.

The spelling of 148434721 in words is "one hundred forty-eight million, four hundred thirty-four thousand, seven hundred twenty-one".