148747121 has 2 divisors, whose sum is σ = 148747122. Its totient is φ = 148747120.

The previous prime is 148747111. The next prime is 148747153. The reversal of 148747121 is 121747841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111598096 + 37149025 = 10564^2 + 6095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148747121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (148747111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74373560 + 74373561.

It is an arithmetic number, because the mean of its divisors is an integer number (74373561).

Almost surely, 2^148747121 is an apocalyptic number.

It is an amenable number.

148747121 is a deficient number, since it is larger than the sum of its proper divisors (1).

148747121 is an equidigital number, since it uses as much as digits as its factorization.

148747121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12544, while the sum is 35.

The square root of 148747121 is about 12196.1928895865. The cubic root of 148747121 is about 529.8458326964.

The spelling of 148747121 in words is "one hundred forty-eight million, seven hundred forty-seven thousand, one hundred twenty-one".