542147239 has 2 divisors, whose sum is σ = 542147240. Its totient is φ = 542147238.

The previous prime is 542147213. The next prime is 542147363. The reversal of 542147239 is 932741245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542147239 - 2⁹ = 542146727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 542147198 and 542147207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542141239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271073619 + 271073620.

It is an arithmetic number, because the mean of its divisors is an integer number (271073620).

Almost surely, 2^542147239 is an apocalyptic number.

542147239 is a deficient number, since it is larger than the sum of its proper divisors (1).

542147239 is an equidigital number, since it uses as much as digits as its factorization.

542147239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 542147239 is about 23284.0554672076. The cubic root of 542147239 is about 815.4032099718.

The spelling of 542147239 in words is "five hundred forty-two million, one hundred forty-seven thousand, two hundred thirty-nine".