434142391 has 2 divisors, whose sum is σ = 434142392. Its totient is φ = 434142390.

The previous prime is 434142361. The next prime is 434142403. The reversal of 434142391 is 193241434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 434142391 - 2²¹ = 432045239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434142341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217071195 + 217071196.

It is an arithmetic number, because the mean of its divisors is an integer number (217071196).

Almost surely, 2^434142391 is an apocalyptic number.

434142391 is a deficient number, since it is larger than the sum of its proper divisors (1).

434142391 is an equidigital number, since it uses as much as digits as its factorization.

434142391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 434142391 is about 20836.0838690959. The cubic root of 434142391 is about 757.2002196161.

The spelling of 434142391 in words is "four hundred thirty-four million, one hundred forty-two thousand, three hundred ninety-one".