542400203 has 4 divisors (see below), whose sum is σ = 542502288. Its totient is φ = 542298120.

The previous prime is 542400167. The next prime is 542400217. The reversal of 542400203 is 302004245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302004245 = 5 ⋅60400849.

It is a cyclic number.

It is not a de Polignac number, because 542400203 - 2¹⁸ = 542138059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542400403) 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, 42608 + ... + 53853.

It is an arithmetic number, because the mean of its divisors is an integer number (135625572).

Almost surely, 2^542400203 is an apocalyptic number.

542400203 is a deficient number, since it is larger than the sum of its proper divisors (102085).

542400203 is an equidigital number, since it uses as much as digits as its factorization.

542400203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102084.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 542400203 is about 23289.4869630054. The cubic root of 542400203 is about 815.5300116779.

Adding to 542400203 its reverse (302004245), we get a palindrome (844404448).

The spelling of 542400203 in words is "five hundred forty-two million, four hundred thousand, two hundred three".