77419742 has 4 divisors (see below), whose sum is σ = 116129616. Its totient is φ = 38709870.

The previous prime is 77419739. The next prime is 77419753. The reversal of 77419742 is 24791477.

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

It is a self number, because there is not a number n which added to its sum of digits gives 77419742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19354934 + ... + 19354937.

It is an arithmetic number, because the mean of its divisors is an integer number (29032404).

Almost surely, 2^77419742 is an apocalyptic number.

77419742 is a deficient number, since it is larger than the sum of its proper divisors (38709874).

77419742 is a wasteful number, since it uses less digits than its factorization.

77419742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38709873.

The product of its digits is 98784, while the sum is 41.

The square root of 77419742 is about 8798.8489019871. The cubic root of 77419742 is about 426.2037238169.

The spelling of 77419742 in words is "seventy-seven million, four hundred nineteen thousand, seven hundred forty-two".