427421040 has 160 divisors (see below), whose sum is σ = 1375150080. Its totient is φ = 109734912.

The previous prime is 427421011. The next prime is 427421041. The reversal of 427421040 is 40124724.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 427421040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427421041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1127571 + ... + 1127949.

It is an arithmetic number, because the mean of its divisors is an integer number (8594688).

Almost surely, 2^427421040 is an apocalyptic number.

427421040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427421040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687575040).

427421040 is an abundant number, since it is smaller than the sum of its proper divisors (947729040).

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

427421040 is a wasteful number, since it uses less digits than its factorization.

427421040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 427421040 is about 20674.1635864670. The cubic root of 427421040 is about 753.2722446787.

Adding to 427421040 its reverse (40124724), we get a palindrome (467545764).

The spelling of 427421040 in words is "four hundred twenty-seven million, four hundred twenty-one thousand, forty".