542633128 has 8 divisors (see below), whose sum is σ = 1017437130. Its totient is φ = 271316560.

The previous prime is 542633107. The next prime is 542633129. The reversal of 542633128 is 821336245.

It can be written as a sum of positive squares in only one way, i.e., 538147204 + 4485924 = 23198^2 + 2118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 542633093 and 542633102.

It is not an unprimeable number, because it can be changed into a prime (542633129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33914563 + ... + 33914578.

Almost surely, 2^542633128 is an apocalyptic number.

It is an amenable number.

542633128 is a deficient number, since it is larger than the sum of its proper divisors (474804002).

542633128 is a wasteful number, since it uses less digits than its factorization.

542633128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67829147 (or 67829143 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 542633128 is about 23294.4870731253. The cubic root of 542633128 is about 815.6467336986.

The spelling of 542633128 in words is "five hundred forty-two million, six hundred thirty-three thousand, one hundred twenty-eight".