80642741 has 8 divisors (see below), whose sum is σ = 83591040. Its totient is φ = 77745888.

The previous prime is 80642729. The next prime is 80642773. The reversal of 80642741 is 14724608.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80642741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80642698 and 80642707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80642711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9656 + ... + 15953.

It is an arithmetic number, because the mean of its divisors is an integer number (10448880).

Almost surely, 2^80642741 is an apocalyptic number.

It is an amenable number.

80642741 is a deficient number, since it is larger than the sum of its proper divisors (2948299).

80642741 is a wasteful number, since it uses less digits than its factorization.

80642741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25723.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 80642741 is about 8980.1303442656. The cubic root of 80642741 is about 432.0378142625.

The spelling of 80642741 in words is "eighty million, six hundred forty-two thousand, seven hundred forty-one".