77000042 has 8 divisors (see below), whose sum is σ = 132000096. Its totient is φ = 33000012.

The previous prime is 77000039. The next prime is 77000047. The reversal of 77000042 is 24000077.

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 = 76999978 and 77000023.

It is not an unprimeable number, because it can be changed into a prime (77000047) 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, 2749988 + ... + 2750015.

It is an arithmetic number, because the mean of its divisors is an integer number (16500012).

Almost surely, 2^77000042 is an apocalyptic number.

77000042 is a deficient number, since it is larger than the sum of its proper divisors (55000054).

77000042 is a wasteful number, since it uses less digits than its factorization.

77000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500012.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 77000042 is about 8774.9667805639. The cubic root of 77000042 is about 425.4321638628.

The spelling of 77000042 in words is "seventy-seven million, forty-two", and thus it is an aban number and an uban number.