7561713042 has 80 divisors (see below), whose sum is σ = 18339921600. Its totient is φ = 2314860768.

The previous prime is 7561713041. The next prime is 7561713077. The reversal of 7561713042 is 2403171657.

It is a happy number.

7561713042 is a `hidden beast` number, since 7 + 5 + 617 + 1 + 30 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 7561712988 and 7561713006.

It is not an unprimeable number, because it can be changed into a prime (7561713041) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 410073 + ... + 428115.

It is an arithmetic number, because the mean of its divisors is an integer number (229249020).

Almost surely, 2^7561713042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7561713042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9169960800).

7561713042 is an abundant number, since it is smaller than the sum of its proper divisors (10778208558).

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

7561713042 is a wasteful number, since it uses less digits than its factorization.

7561713042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18269 (or 18260 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 7561713042 is about 86958.1108465450. The cubic root of 7561713042 is about 1962.7880149701.

Adding to 7561713042 its reverse (2403171657), we get a palindrome (9964884699).

The spelling of 7561713042 in words is "seven billion, five hundred sixty-one million, seven hundred thirteen thousand, forty-two".