542843522 has 16 divisors (see below), whose sum is σ = 877725240. Its totient is φ = 250307712.

The previous prime is 542843513. The next prime is 542843527. The reversal of 542843522 is 225348245.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 219958561 + 322884961 = 14831^2 + 17969^2 .

It is not an unprimeable number, because it can be changed into a prime (542843527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20108 + ... + 38600.

Almost surely, 2^542843522 is an apocalyptic number.

542843522 is a deficient number, since it is larger than the sum of its proper divisors (334881718).

542843522 is a wasteful number, since it uses less digits than its factorization.

542843522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19637.

The product of its digits is 76800, while the sum is 35.

The square root of 542843522 is about 23299.0025966778. The cubic root of 542843522 is about 815.7521364074.

The spelling of 542843522 in words is "five hundred forty-two million, eight hundred forty-three thousand, five hundred twenty-two".