5215730042 has 4 divisors (see below), whose sum is σ = 7823595066. Its totient is φ = 2607865020.

The previous prime is 5215730041. The next prime is 5215730057. The reversal of 5215730042 is 2400375125.

It is a happy number.

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., 3584297161 + 1631432881 = 59869^2 + 40391^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5215729987 and 5215730014.

It is not an unprimeable number, because it can be changed into a prime (5215730041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303932509 + ... + 1303932512.

Almost surely, 2^5215730042 is an apocalyptic number.

5215730042 is a deficient number, since it is larger than the sum of its proper divisors (2607865024).

5215730042 is a wasteful number, since it uses less digits than its factorization.

5215730042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607865023.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 5215730042 is about 72220.0113680412. The cubic root of 5215730042 is about 1734.2233723470.

The spelling of 5215730042 in words is "five billion, two hundred fifteen million, seven hundred thirty thousand, forty-two".