542530631 has 4 divisors (see below), whose sum is σ = 552767112. Its totient is φ = 532294152.

The previous prime is 542530619. The next prime is 542530633. The reversal of 542530631 is 136035245.

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 542530631 - 2¹⁰ = 542529607 is a prime.

It is a super-2 number, since 2×542530631² = 588678971146516322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542530594 and 542530603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542530633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5118161 + ... + 5118266.

It is an arithmetic number, because the mean of its divisors is an integer number (138191778).

Almost surely, 2^542530631 is an apocalyptic number.

542530631 is a deficient number, since it is larger than the sum of its proper divisors (10236481).

542530631 is a wasteful number, since it uses less digits than its factorization.

542530631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10236480.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 542530631 is about 23292.2869422476. The cubic root of 542530631 is about 815.5953751144.

Adding to 542530631 its reverse (136035245), we get a palindrome (678565876).

The spelling of 542530631 in words is "five hundred forty-two million, five hundred thirty thousand, six hundred thirty-one".