76421210 has 8 divisors (see below), whose sum is σ = 137558196. Its totient is φ = 30568480.

The previous prime is 76421209. The next prime is 76421221. The reversal of 76421210 is 1212467.

It can be written as a sum of positive squares in 2 ways, for example, as 76405081 + 16129 = 8741^2 + 127^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3821051 + ... + 3821070.

Almost surely, 2^76421210 is an apocalyptic number.

76421210 is a deficient number, since it is larger than the sum of its proper divisors (61136986).

76421210 is a wasteful number, since it uses less digits than its factorization.

76421210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642128.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 76421210 is about 8741.9225574241. The cubic root of 76421210 is about 424.3634484533.

Adding to 76421210 its reverse (1212467), we get a palindrome (77633677).

The spelling of 76421210 in words is "seventy-six million, four hundred twenty-one thousand, two hundred ten".