538621042 has 8 divisors (see below), whose sum is σ = 810513756. Its totient is φ = 268449792.

The previous prime is 538621019. The next prime is 538621051. The reversal of 538621042 is 240126835.

It can be written as a sum of positive squares in 2 ways, for example, as 500909161 + 37711881 = 22381^2 + 6141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×538621042² = 580225253770331528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 538620995 and 538621013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429583 + ... + 430834.

Almost surely, 2^538621042 is an apocalyptic number.

538621042 is a deficient number, since it is larger than the sum of its proper divisors (271892714).

538621042 is a wasteful number, since it uses less digits than its factorization.

538621042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860732.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 538621042 is about 23208.2106591611. The cubic root of 538621042 is about 813.6315333956.

Adding to 538621042 its reverse (240126835), we get a palindrome (778747877).

The spelling of 538621042 in words is "five hundred thirty-eight million, six hundred twenty-one thousand, forty-two".