77075842 has 8 divisors (see below), whose sum is σ = 116064396. Its totient is φ = 38387712.

The previous prime is 77075839. The next prime is 77075849. The reversal of 77075842 is 24857077.

It can be written as a sum of positive squares in 2 ways, for example, as 76405081 + 670761 = 8741^2 + 819^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 77075795 and 77075804.

It is not an unprimeable number, because it can be changed into a prime (77075849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74463 + ... + 75490.

Almost surely, 2^77075842 is an apocalyptic number.

77075842 is a deficient number, since it is larger than the sum of its proper divisors (38988554).

77075842 is a wasteful number, since it uses less digits than its factorization.

77075842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150212.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 77075842 is about 8779.2848228087. The cubic root of 77075842 is about 425.5717186874.

The spelling of 77075842 in words is "seventy-seven million, seventy-five thousand, eight hundred forty-two".