77317242 has 16 divisors (see below), whose sum is σ = 154770912. Its totient is φ = 25749680.

The previous prime is 77317189. The next prime is 77317243. The reversal of 77317242 is 24271377.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (77317243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2617 + ... + 12707.

It is an arithmetic number, because the mean of its divisors is an integer number (9673182).

Almost surely, 2^77317242 is an apocalyptic number.

77317242 is an abundant number, since it is smaller than the sum of its proper divisors (77453670).

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

77317242 is a wasteful number, since it uses less digits than its factorization.

77317242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11373.

The product of its digits is 16464, while the sum is 33.

The square root of 77317242 is about 8793.0223472933. The cubic root of 77317242 is about 426.0155496980.

The spelling of 77317242 in words is "seventy-seven million, three hundred seventeen thousand, two hundred forty-two".