542440252 has 6 divisors (see below), whose sum is σ = 949270448. Its totient is φ = 271220124.

The previous prime is 542440247. The next prime is 542440259. The reversal of 542440252 is 252044245.

542440252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 542440252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542440259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67805028 + ... + 67805035.

Almost surely, 2^542440252 is an apocalyptic number.

It is an amenable number.

542440252 is a deficient number, since it is larger than the sum of its proper divisors (406830196).

542440252 is a wasteful number, since it uses less digits than its factorization.

542440252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135610067 (or 135610065 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 542440252 is about 23290.3467556840. The cubic root of 542440252 is about 815.5500831783.

Adding to 542440252 its reverse (252044245), we get a palindrome (794484497).

The spelling of 542440252 in words is "five hundred forty-two million, four hundred forty thousand, two hundred fifty-two".