7720900142 has 8 divisors (see below), whose sum is σ = 11591796600. Its totient is φ = 3856967944.

The previous prime is 7720900129. The next prime is 7720900147. The reversal of 7720900142 is 2410090277.

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

It is a super-2 number, since 2×7720900142² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7720900099 and 7720900108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7720900147) 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 3 ways as a sum of consecutive naturals, for example, 1738292 + ... + 1742727.

It is an arithmetic number, because the mean of its divisors is an integer number (1448974575).

Almost surely, 2^7720900142 is an apocalyptic number.

7720900142 is a deficient number, since it is larger than the sum of its proper divisors (3870896458).

7720900142 is a wasteful number, since it uses less digits than its factorization.

7720900142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482130.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 7720900142 is about 87868.6527835724. The cubic root of 7720900142 is about 1976.4658362822.

The spelling of 7720900142 in words is "seven billion, seven hundred twenty million, nine hundred thousand, one hundred forty-two".