525142042 has 4 divisors (see below), whose sum is σ = 787713066. Its totient is φ = 262571020.

The previous prime is 525142039. The next prime is 525142043. The reversal of 525142042 is 240241525.

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

It can be written as a sum of positive squares in only one way, i.e., 476156041 + 48986001 = 21821^2 + 6999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 525141998 and 525142016.

It is not an unprimeable number, because it can be changed into a prime (525142043) 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 as a sum of consecutive naturals, namely, 131285509 + ... + 131285512.

Almost surely, 2^525142042 is an apocalyptic number.

525142042 is a deficient number, since it is larger than the sum of its proper divisors (262571024).

525142042 is a wasteful number, since it uses less digits than its factorization.

525142042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262571023.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 525142042 is about 22915.9778757093. The cubic root of 525142042 is about 806.7870703033.

Adding to 525142042 its reverse (240241525), we get a palindrome (765383567).

The spelling of 525142042 in words is "five hundred twenty-five million, one hundred forty-two thousand, forty-two".