427128012 has 24 divisors (see below), whose sum is σ = 1107369200. Its totient is φ = 142375968.

The previous prime is 427128011. The next prime is 427128017. The reversal of 427128012 is 210821724.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (427128011) 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, 1977337 + ... + 1977552.

Almost surely, 2^427128012 is an apocalyptic number.

It is an amenable number.

427128012 is an abundant number, since it is smaller than the sum of its proper divisors (680241188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427128012 is a wasteful number, since it uses less digits than its factorization.

427128012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954902 (or 3954894 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 427128012 is about 20667.0755550949. The cubic root of 427128012 is about 753.1000644786.

Adding to 427128012 its reverse (210821724), we get a palindrome (637949736).

The spelling of 427128012 in words is "four hundred twenty-seven million, one hundred twenty-eight thousand, twelve".