542540232 has 48 divisors (see below), whose sum is σ = 1582411740. Its totient is φ = 166935168.

The previous prime is 542540203. The next prime is 542540237. The reversal of 542540232 is 232045245.

It is a happy number.

542540232 is a `hidden beast` number, since 5 + 425 + 4 + 0 + 232 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 461648196 + 80892036 = 21486^2 + 8994^2 .

It is a super-2 number, since 2×542540232² = 588699806677227648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 542540196 and 542540205.

It is not an unprimeable number, because it can be changed into a prime (542540237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288883 + ... + 290754.

Almost surely, 2^542540232 is an apocalyptic number.

542540232 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

542540232 is an abundant number, since it is smaller than the sum of its proper divisors (1039871508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542540232 is a wasteful number, since it uses less digits than its factorization.

542540232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579662 (or 579655 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 542540232 is about 23292.4930396040. The cubic root of 542540232 is about 815.6001862007.

Adding to 542540232 its reverse (232045245), we get a palindrome (774585477).

The spelling of 542540232 in words is "five hundred forty-two million, five hundred forty thousand, two hundred thirty-two".