77421482 has 4 divisors (see below), whose sum is σ = 116132226. Its totient is φ = 38710740.

The previous prime is 77421481. The next prime is 77421493. The reversal of 77421482 is 28412477.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28412477 = 83 ⋅342319.

It can be written as a sum of positive squares in only one way, i.e., 74459641 + 2961841 = 8629^2 + 1721^2 .

It is not an unprimeable number, because it can be changed into a prime (77421481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19355369 + ... + 19355372.

Almost surely, 2^77421482 is an apocalyptic number.

77421482 is a deficient number, since it is larger than the sum of its proper divisors (38710744).

77421482 is a wasteful number, since it uses less digits than its factorization.

77421482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38710743.

The product of its digits is 25088, while the sum is 35.

The square root of 77421482 is about 8798.9477780016. The cubic root of 77421482 is about 426.2069167533.

The spelling of 77421482 in words is "seventy-seven million, four hundred twenty-one thousand, four hundred eighty-two".