146942557 has 2 divisors, whose sum is σ = 146942558. Its totient is φ = 146942556.

The previous prime is 146942533. The next prime is 146942563. The reversal of 146942557 is 755249641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84437721 + 62504836 = 9189^2 + 7906^2 .

It is a cyclic number.

It is not a de Polignac number, because 146942557 - 2¹⁹ = 146418269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146943557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73471278 + 73471279.

It is an arithmetic number, because the mean of its divisors is an integer number (73471279).

Almost surely, 2^146942557 is an apocalyptic number.

It is an amenable number.

146942557 is a deficient number, since it is larger than the sum of its proper divisors (1).

146942557 is an equidigital number, since it uses as much as digits as its factorization.

146942557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The square root of 146942557 is about 12121.9865121192. The cubic root of 146942557 is about 527.6944553851.

The spelling of 146942557 in words is "one hundred forty-six million, nine hundred forty-two thousand, five hundred fifty-seven".