542578738 has 16 divisors (see below), whose sum is σ = 876954456. Its totient is φ = 250283520.

The previous prime is 542578733. The next prime is 542578741. The reversal of 542578738 is 837875245.

It can be written as a sum of positive squares in 4 ways, for example, as 498316329 + 44262409 = 22323^2 + 6653^2 .

It is a junction number, because it is equal to n+sod(n) for n = 542578691 and 542578700.

It is not an unprimeable number, because it can be changed into a prime (542578733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54508 + ... + 63688.

Almost surely, 2^542578738 is an apocalyptic number.

542578738 is a deficient number, since it is larger than the sum of its proper divisors (334375718).

542578738 is a wasteful number, since it uses less digits than its factorization.

542578738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11469.

The product of its digits is 1881600, while the sum is 49.

The square root of 542578738 is about 23293.3196002631. The cubic root of 542578738 is about 815.6194810879.

The spelling of 542578738 in words is "five hundred forty-two million, five hundred seventy-eight thousand, seven hundred thirty-eight".