542823043 has 4 divisors (see below), whose sum is σ = 620369200. Its totient is φ = 465276888.

The previous prime is 542823011. The next prime is 542823077. The reversal of 542823043 is 340328245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340328245 = 5 ⋅68065649.

It is a cyclic number.

It is not a de Polignac number, because 542823043 - 2⁵ = 542823011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542822996 and 542823014.

It is not an unprimeable number, because it can be changed into a prime (542823143) 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, 38773068 + ... + 38773081.

It is an arithmetic number, because the mean of its divisors is an integer number (155092300).

Almost surely, 2^542823043 is an apocalyptic number.

542823043 is a deficient number, since it is larger than the sum of its proper divisors (77546157).

542823043 is an equidigital number, since it uses as much as digits as its factorization.

542823043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77546156.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 542823043 is about 23298.5631102006. The cubic root of 542823043 is about 815.7418780810.

The spelling of 542823043 in words is "five hundred forty-two million, eight hundred twenty-three thousand, forty-three".