542440259 has 2 divisors, whose sum is σ = 542440260. Its totient is φ = 542440258.

The previous prime is 542440247. The next prime is 542440321. The reversal of 542440259 is 952044245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542440259 - 2²⁴ = 525663043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (542440559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271220129 + 271220130.

It is an arithmetic number, because the mean of its divisors is an integer number (271220130).

Almost surely, 2^542440259 is an apocalyptic number.

542440259 is a deficient number, since it is larger than the sum of its proper divisors (1).

542440259 is an equidigital number, since it uses as much as digits as its factorization.

542440259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 542440259 is about 23290.3469059608. The cubic root of 542440259 is about 815.5500866864.

The spelling of 542440259 in words is "five hundred forty-two million, four hundred forty thousand, two hundred fifty-nine".