7420072761 has 12 divisors (see below), whose sum is σ = 10847015088. Its totient is φ = 4887115704.

The previous prime is 7420072721. The next prime is 7420072771. The reversal of 7420072761 is 1672700247.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-7420072761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7420072721) 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 11 ways as a sum of consecutive naturals, for example, 4965835 + ... + 4967328.

It is an arithmetic number, because the mean of its divisors is an integer number (903917924).

Almost surely, 2^7420072761 is an apocalyptic number.

It is an amenable number.

7420072761 is a deficient number, since it is larger than the sum of its proper divisors (3426942327).

7420072761 is a wasteful number, since it uses less digits than its factorization.

7420072761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9933252 (or 9933249 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 7420072761 is about 86139.8442127683. The cubic root of 7420072761 is about 1950.4555377554.

The spelling of 7420072761 in words is "seven billion, four hundred twenty million, seventy-two thousand, seven hundred sixty-one".