77285942 has 4 divisors (see below), whose sum is σ = 115928916. Its totient is φ = 38642970.

The previous prime is 77285941. The next prime is 77285981. The reversal of 77285942 is 24958277.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 77285893 and 77285902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77285941) 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 as a sum of consecutive naturals, namely, 19321484 + ... + 19321487.

It is an arithmetic number, because the mean of its divisors is an integer number (28982229).

Almost surely, 2^77285942 is an apocalyptic number.

77285942 is a deficient number, since it is larger than the sum of its proper divisors (38642974).

77285942 is a wasteful number, since it uses less digits than its factorization.

77285942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38642973.

The product of its digits is 282240, while the sum is 44.

The square root of 77285942 is about 8791.2423467904. The cubic root of 77285942 is about 425.9580546033.

The spelling of 77285942 in words is "seventy-seven million, two hundred eighty-five thousand, nine hundred forty-two".