542293813 has 4 divisors (see below), whose sum is σ = 546252300. Its totient is φ = 538335328.

The previous prime is 542293789. The next prime is 542293831. The reversal of 542293813 is 318392245.

542293813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 352763524 + 189530289 = 18782^2 + 13767^2 .

It is a cyclic number.

It is not a de Polignac number, because 542293813 - 2⁵ = 542293781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542293313) 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, 1979038 + ... + 1979311.

It is an arithmetic number, because the mean of its divisors is an integer number (136563075).

Almost surely, 2^542293813 is an apocalyptic number.

It is an amenable number.

542293813 is a deficient number, since it is larger than the sum of its proper divisors (3958487).

542293813 is a wasteful number, since it uses less digits than its factorization.

542293813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958486.

The product of its digits is 51840, while the sum is 37.

The square root of 542293813 is about 23287.2027731971. The cubic root of 542293813 is about 815.4766870228.

It can be divided in two parts, 5422 and 93813, that added together give a triangular number (99235 = T₄₄₅).

The spelling of 542293813 in words is "five hundred forty-two million, two hundred ninety-three thousand, eight hundred thirteen".