7122559042 has 4 divisors (see below), whose sum is σ = 10683838566. Its totient is φ = 3561279520.

The previous prime is 7122559021. The next prime is 7122559049. The reversal of 7122559042 is 2409552217.

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., 4862412361 + 2260146681 = 69731^2 + 47541^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7122558992 and 7122559010.

It is not an unprimeable number, because it can be changed into a prime (7122559049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780639759 + ... + 1780639762.

Almost surely, 2^7122559042 is an apocalyptic number.

7122559042 is a deficient number, since it is larger than the sum of its proper divisors (3561279524).

7122559042 is a wasteful number, since it uses less digits than its factorization.

7122559042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561279523.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 7122559042 is about 84395.2548547606. The cubic root of 7122559042 is about 1924.0307971566.

The spelling of 7122559042 in words is "seven billion, one hundred twenty-two million, five hundred fifty-nine thousand, forty-two".