542450243 has 4 divisors (see below), whose sum is σ = 544194768. Its totient is φ = 540705720.

The previous prime is 542450231. The next prime is 542450281. The reversal of 542450243 is 342054245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542450243 - 2¹⁶ = 542384707 is a prime.

It is a super-2 number, since 2×542450243² = 588504532261518098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542452243) 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, 871796 + ... + 872417.

It is an arithmetic number, because the mean of its divisors is an integer number (136048692).

Almost surely, 2^542450243 is an apocalyptic number.

542450243 is a deficient number, since it is larger than the sum of its proper divisors (1744525).

542450243 is a wasteful number, since it uses less digits than its factorization.

542450243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744524.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 542450243 is about 23290.5612427009. The cubic root of 542450243 is about 815.5550902495. Note that the first 3 decimals are identical.

The spelling of 542450243 in words is "five hundred forty-two million, four hundred fifty thousand, two hundred forty-three".