542157547 has 2 divisors, whose sum is σ = 542157548. Its totient is φ = 542157546.

The previous prime is 542157529. The next prime is 542157601. The reversal of 542157547 is 745751245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542157547 - 2¹⁹ = 541633259 is a prime.

It is not a weakly prime, because it can be changed into another prime (542107547) 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, 271078773 + 271078774.

It is an arithmetic number, because the mean of its divisors is an integer number (271078774).

Almost surely, 2^542157547 is an apocalyptic number.

542157547 is a deficient number, since it is larger than the sum of its proper divisors (1).

542157547 is an equidigital number, since it uses as much as digits as its factorization.

542157547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 196000, while the sum is 40.

The square root of 542157547 is about 23284.2768193474. The cubic root of 542157547 is about 815.4083777703.

The spelling of 542157547 in words is "five hundred forty-two million, one hundred fifty-seven thousand, five hundred forty-seven".