78127012 has 12 divisors (see below), whose sum is σ = 143918320. Its totient is φ = 37007496.

The previous prime is 78126977. The next prime is 78127039. The reversal of 78127012 is 21072187.

It is a super-2 number, since 2×78127012² = 12207660008096288, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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, 513918 + ... + 514069.

Almost surely, 2^78127012 is an apocalyptic number.

It is an amenable number.

78127012 is a deficient number, since it is larger than the sum of its proper divisors (65791308).

78127012 is a wasteful number, since it uses less digits than its factorization.

78127012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028010 (or 1028008 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 78127012 is about 8838.9485800066. The cubic root of 78127012 is about 427.4976564740.

Adding to 78127012 its reverse (21072187), we get a palindrome (99199199).

The spelling of 78127012 in words is "seventy-eight million, one hundred twenty-seven thousand, twelve".