542123633 has 4 divisors (see below), whose sum is σ = 543659748. Its totient is φ = 540587520.

The previous prime is 542123627. The next prime is 542123671. The reversal of 542123633 is 336321245.

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 349802209 + 192321424 = 18703^2 + 13868^2 .

It is a cyclic number.

It is not a de Polignac number, because 542123633 - 2⁸ = 542123377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542123596 and 542123605.

It is not an unprimeable number, because it can be changed into a prime (542113633) 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, 767528 + ... + 768233.

It is an arithmetic number, because the mean of its divisors is an integer number (135914937).

Almost surely, 2^542123633 is an apocalyptic number.

It is an amenable number.

542123633 is a deficient number, since it is larger than the sum of its proper divisors (1536115).

542123633 is a wasteful number, since it uses less digits than its factorization.

542123633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536114.

The product of its digits is 12960, while the sum is 29.

The square root of 542123633 is about 23283.5485482776. The cubic root of 542123633 is about 815.3913751256.

Adding to 542123633 its reverse (336321245), we get a palindrome (878444878).

The spelling of 542123633 in words is "five hundred forty-two million, one hundred twenty-three thousand, six hundred thirty-three".