77420134 has 8 divisors (see below), whose sum is σ = 126687528. Its totient is φ = 35190960.

The previous prime is 77420071. The next prime is 77420137. The reversal of 77420134 is 43102477.

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

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 3 ways as a sum of consecutive naturals, for example, 1759527 + ... + 1759570.

It is an arithmetic number, because the mean of its divisors is an integer number (15835941).

Almost surely, 2^77420134 is an apocalyptic number.

77420134 is a deficient number, since it is larger than the sum of its proper divisors (49267394).

77420134 is a wasteful number, since it uses less digits than its factorization.

77420134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519110.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 77420134 is about 8798.8711776000. The cubic root of 77420134 is about 426.2044431493.

The spelling of 77420134 in words is "seventy-seven million, four hundred twenty thousand, one hundred thirty-four".