7142207856 has 120 divisors (see below), whose sum is σ = 21519939600. Its totient is φ = 2035224576.

The previous prime is 7142207837. The next prime is 7142207857. The reversal of 7142207856 is 6587022417.

It is a super-2 number, since 2×7142207856² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142207857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 929920 + ... + 937568.

It is an arithmetic number, because the mean of its divisors is an integer number (179332830).

Almost surely, 2^7142207856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7142207856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10759969800).

7142207856 is an abundant number, since it is smaller than the sum of its proper divisors (14377731744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7142207856 is a wasteful number, since it uses less digits than its factorization.

7142207856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8071 (or 8058 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 7142207856 is about 84511.5841527065. The cubic root of 7142207856 is about 1925.7984302227.

The spelling of 7142207856 in words is "seven billion, one hundred forty-two million, two hundred seven thousand, eight hundred fifty-six".