77871342 has 16 divisors (see below), whose sum is σ = 156535632. Its totient is φ = 25824960.

The previous prime is 77871337. The next prime is 77871359. The reversal of 77871342 is 24317877.

It is a self number, because there is not a number n which added to its sum of digits gives 77871342.

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 7 ways as a sum of consecutive naturals, for example, 31759 + ... + 34122.

It is an arithmetic number, because the mean of its divisors is an integer number (9783477).

Almost surely, 2^77871342 is an apocalyptic number.

77871342 is an abundant number, since it is smaller than the sum of its proper divisors (78664290).

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

77871342 is a wasteful number, since it uses less digits than its factorization.

77871342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66083.

The product of its digits is 65856, while the sum is 39.

The square root of 77871342 is about 8824.4740353179. The cubic root of 77871342 is about 427.0308193490.

The spelling of 77871342 in words is "seventy-seven million, eight hundred seventy-one thousand, three hundred forty-two".