542021530 has 8 divisors (see below), whose sum is σ = 975638772. Its totient is φ = 216808608.

The previous prime is 542021527. The next prime is 542021533. The reversal of 542021530 is 35120245.

It is an interprime number because it is at equal distance from previous prime (542021527) and next prime (542021533).

It can be written as a sum of positive squares in 2 ways, for example, as 540516001 + 1505529 = 23249^2 + 1227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (542021533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27101067 + ... + 27101086.

Almost surely, 2^542021530 is an apocalyptic number.

542021530 is a deficient number, since it is larger than the sum of its proper divisors (433617242).

542021530 is a wasteful number, since it uses less digits than its factorization.

542021530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54202160.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 542021530 is about 23281.3558453970. The cubic root of 542021530 is about 815.3401819243.

Adding to 542021530 its reverse (35120245), we get a palindrome (577141775).

It can be divided in two parts, 5420215 and 30, that added together give a palindrome (5420245).

The spelling of 542021530 in words is "five hundred forty-two million, twenty-one thousand, five hundred thirty".