146971247 has 2 divisors, whose sum is σ = 146971248. Its totient is φ = 146971246.

The previous prime is 146971211. The next prime is 146971277. The reversal of 146971247 is 742179641.

146971247 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 is a cyclic number.

It is not a de Polignac number, because 146971247 - 2⁸ = 146970991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146971277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73485623 + 73485624.

It is an arithmetic number, because the mean of its divisors is an integer number (73485624).

Almost surely, 2^146971247 is an apocalyptic number.

146971247 is a deficient number, since it is larger than the sum of its proper divisors (1).

146971247 is an equidigital number, since it uses as much as digits as its factorization.

146971247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The square root of 146971247 is about 12123.1698412585. The cubic root of 146971247 is about 527.7287966248.

The spelling of 146971247 in words is "one hundred forty-six million, nine hundred seventy-one thousand, two hundred forty-seven".