427243940 has 12 divisors (see below), whose sum is σ = 897212316. Its totient is φ = 170897568.

The previous prime is 427243933. The next prime is 427243981. The reversal of 427243940 is 49342724.

It can be written as a sum of positive squares in 2 ways, for example, as 117202276 + 310041664 = 10826^2 + 17608^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 427243940.

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, 10681079 + ... + 10681118.

It is an arithmetic number, because the mean of its divisors is an integer number (74767693).

Almost surely, 2^427243940 is an apocalyptic number.

It is an amenable number.

427243940 is an abundant number, since it is smaller than the sum of its proper divisors (469968376).

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

427243940 is a wasteful number, since it uses less digits than its factorization.

427243940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21362206 (or 21362204 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 427243940 is about 20669.8800190035. The cubic root of 427243940 is about 753.1681919755.

It can be divided in two parts, 42724 and 3940, that added together give a palindrome (46664).

The spelling of 427243940 in words is "four hundred twenty-seven million, two hundred forty-three thousand, nine hundred forty".