542232389 has 2 divisors, whose sum is σ = 542232390. Its totient is φ = 542232388.

The previous prime is 542232371. The next prime is 542232409. The reversal of 542232389 is 983232245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 536709889 + 5522500 = 23167^2 + 2350^2 .

It is a cyclic number.

It is not a de Polignac number, because 542232389 - 2²⁴ = 525455173 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (542232359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271116194 + 271116195.

It is an arithmetic number, because the mean of its divisors is an integer number (271116195).

Almost surely, 2^542232389 is an apocalyptic number.

It is an amenable number.

542232389 is a deficient number, since it is larger than the sum of its proper divisors (1).

542232389 is an equidigital number, since it uses as much as digits as its factorization.

542232389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The square root of 542232389 is about 23285.8838999081. The cubic root of 542232389 is about 815.4458969909.

The spelling of 542232389 in words is "five hundred forty-two million, two hundred thirty-two thousand, three hundred eighty-nine".