7211888042 has 8 divisors (see below), whose sum is σ = 10856330532. Its totient is φ = 3593111200.

The previous prime is 7211888039. The next prime is 7211888129. The reversal of 7211888042 is 2408881127.

It can be written as a sum of positive squares in 2 ways, for example, as 7013895001 + 197993041 = 83749^2 + 14071^2 .

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

It is a super-2 number, since 2×7211888042² (a number of 21 digits) contains 22 as substring.

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, 6415709 + ... + 6416832.

Almost surely, 2^7211888042 is an apocalyptic number.

7211888042 is a deficient number, since it is larger than the sum of its proper divisors (3644442490).

7211888042 is a wasteful number, since it uses less digits than its factorization.

7211888042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12832824.

The product of its (nonzero) digits is 57344, while the sum is 41.

The square root of 7211888042 is about 84922.8358099281. The cubic root of 7211888042 is about 1932.0409420901.

The spelling of 7211888042 in words is "seven billion, two hundred eleven million, eight hundred eighty-eight thousand, forty-two".