147507121 has 2 divisors, whose sum is σ = 147507122. Its totient is φ = 147507120.

The previous prime is 147507067. The next prime is 147507161. The reversal of 147507121 is 121705741.

147507121 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., 136048896 + 11458225 = 11664^2 + 3385^2 .

It is a cyclic number.

It is not a de Polignac number, because 147507121 - 2¹³ = 147498929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 147507121.

It is not a weakly prime, because it can be changed into another prime (147507161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73753560 + 73753561.

It is an arithmetic number, because the mean of its divisors is an integer number (73753561).

Almost surely, 2^147507121 is an apocalyptic number.

It is an amenable number.

147507121 is a deficient number, since it is larger than the sum of its proper divisors (1).

147507121 is an equidigital number, since it uses as much as digits as its factorization.

147507121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 147507121 is about 12145.2509648834. The cubic root of 147507121 is about 528.3694052224.

The spelling of 147507121 in words is "one hundred forty-seven million, five hundred seven thousand, one hundred twenty-one".