542440400 has 30 divisors (see below), whose sum is σ = 1303214022. Its totient is φ = 216976000.

The previous prime is 542440357. The next prime is 542440417. The reversal of 542440400 is 4044245.

It can be written as a sum of positive squares in 3 ways, for example, as 1784896 + 540655504 = 1336^2 + 23252^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 677651 + ... + 678450.

Almost surely, 2^542440400 is an apocalyptic number.

542440400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

542440400 is an abundant number, since it is smaller than the sum of its proper divisors (760773622).

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

542440400 is a wasteful number, since it uses less digits than its factorization.

542440400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356119 (or 1356108 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 542440400 is about 23290.3499329658. The cubic root of 542440400 is about 815.5501573502.

Adding to 542440400 its reverse (4044245), we get a palindrome (546484645).

The spelling of 542440400 in words is "five hundred forty-two million, four hundred forty thousand, four hundred".