77420135 has 8 divisors (see below), whose sum is σ = 100050720. Its totient is φ = 57171744.

The previous prime is 77420071. The next prime is 77420137. The reversal of 77420135 is 53102477.

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

It is a cyclic number.

It is not a de Polignac number, because 77420135 - 2⁶ = 77420071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77420098 and 77420107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77420137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595475 + ... + 595604.

It is an arithmetic number, because the mean of its divisors is an integer number (12506340).

Almost surely, 2^77420135 is an apocalyptic number.

77420135 is a deficient number, since it is larger than the sum of its proper divisors (22630585).

77420135 is a wasteful number, since it uses less digits than its factorization.

77420135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191097.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 77420135 is about 8798.8712344255. The cubic root of 77420135 is about 426.2044449843.

The spelling of 77420135 in words is "seventy-seven million, four hundred twenty thousand, one hundred thirty-five".