147021293 has 2 divisors, whose sum is σ = 147021294. Its totient is φ = 147021292.

The previous prime is 147021283. The next prime is 147021299. The reversal of 147021293 is 392120741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93760489 + 53260804 = 9683^2 + 7298^2 .

It is a cyclic number.

It is not a de Polignac number, because 147021293 - 2¹² = 147017197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147021299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73510646 + 73510647.

It is an arithmetic number, because the mean of its divisors is an integer number (73510647).

Almost surely, 2^147021293 is an apocalyptic number.

It is an amenable number.

147021293 is a deficient number, since it is larger than the sum of its proper divisors (1).

147021293 is an equidigital number, since it uses as much as digits as its factorization.

147021293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 147021293 is about 12125.2337297060. The cubic root of 147021293 is about 527.7886897869.

The spelling of 147021293 in words is "one hundred forty-seven million, twenty-one thousand, two hundred ninety-three".