7837216705242 has 24 divisors (see below), whose sum is σ = 16981292499444. Its totient is φ = 2612304598464.

The previous prime is 7837216705217. The next prime is 7837216705243. The reversal of 7837216705242 is 2425076127387.

It is a happy number.

7837216705242 is a `hidden beast` number, since 7 + 8 + 37 + 2 + 16 + 70 + 524 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7110376907841 + 726839797401 = 2666529^2 + 852549^2 .

It is a super-2 number, since 2×7837216705242² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7837216705243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7934773 + ... + 8867640.

Almost surely, 2^{7837216705242} is an apocalyptic number.

7837216705242 is an abundant number, since it is smaller than the sum of its proper divisors (9144075794202).

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

7837216705242 is a wasteful number, since it uses less digits than its factorization.

7837216705242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16828334 (or 16828331 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 54.

It can be divided in two parts, 7837216 and 705242, that added together give a palindrome (8542458).

The spelling of 7837216705242 in words is "seven trillion, eight hundred thirty-seven billion, two hundred sixteen million, seven hundred five thousand, two hundred forty-two".