77841742 has 32 divisors (see below), whose sum is σ = 139540320. Its totient is φ = 32148480.

The previous prime is 77841733. The next prime is 77841763. The reversal of 77841742 is 24714877.

It is a junction number, because it is equal to n+sod(n) for n = 77841695 and 77841704.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7258 + ... + 14434.

It is an arithmetic number, because the mean of its divisors is an integer number (4360635).

Almost surely, 2^77841742 is an apocalyptic number.

77841742 is a deficient number, since it is larger than the sum of its proper divisors (61698578).

77841742 is a wasteful number, since it uses less digits than its factorization.

77841742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7236.

The product of its digits is 87808, while the sum is 40.

The square root of 77841742 is about 8822.7967221284. The cubic root of 77841742 is about 426.9767056711.

The spelling of 77841742 in words is "seventy-seven million, eight hundred forty-one thousand, seven hundred forty-two".