77420122 has 8 divisors (see below), whose sum is σ = 125063316. Its totient is φ = 35732352.

The previous prime is 77420071. The next prime is 77420137. The reversal of 77420122 is 22102477.

It can be written as a sum of positive squares in 2 ways, for example, as 77070841 + 349281 = 8779^2 + 591^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488823 + ... + 1488874.

Almost surely, 2^77420122 is an apocalyptic number.

77420122 is a deficient number, since it is larger than the sum of its proper divisors (47643194).

77420122 is a wasteful number, since it uses less digits than its factorization.

77420122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977712.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 77420122 is about 8798.8704956943. The cubic root of 77420122 is about 426.2044211290.

Adding to 77420122 its reverse (22102477), we get a palindrome (99522599).

The spelling of 77420122 in words is "seventy-seven million, four hundred twenty thousand, one hundred twenty-two".