77442042 has 8 divisors (see below), whose sum is σ = 154884096. Its totient is φ = 25814012.

The previous prime is 77442037. The next prime is 77442047. The reversal of 77442042 is 24024477.

It is an interprime number because it is at equal distance from previous prime (77442037) and next prime (77442047).

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

77442042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (77442047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6453498 + ... + 6453509.

It is an arithmetic number, because the mean of its divisors is an integer number (19360512).

Almost surely, 2^77442042 is an apocalyptic number.

77442042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77442042 is a wasteful number, since it uses less digits than its factorization.

77442042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12907012.

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 77442042 is about 8800.1160219624. The cubic root of 77442042 is about 426.2446411609.

The spelling of 77442042 in words is "seventy-seven million, four hundred forty-two thousand, forty-two".