427443642 has 40 divisors (see below), whose sum is σ = 962676000. Its totient is φ = 141754536.

The previous prime is 427443581. The next prime is 427443649. The reversal of 427443642 is 246344724.

427443642 is a `hidden beast` number, since 4 + 2 + 7 + 4 + 4 + 3 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 427443597 and 427443606.

It is not an unprimeable number, because it can be changed into a prime (427443649) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25609 + ... + 38867.

It is an arithmetic number, because the mean of its divisors is an integer number (24066900).

Almost surely, 2^427443642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427443642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481338000).

427443642 is an abundant number, since it is smaller than the sum of its proper divisors (535232358).

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

427443642 is a wasteful number, since it uses less digits than its factorization.

427443642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13472 (or 13463 counting only the distinct ones).

The product of its digits is 129024, while the sum is 36.

The square root of 427443642 is about 20674.7102035313. The cubic root of 427443642 is about 753.2855221090.

The spelling of 427443642 in words is "four hundred twenty-seven million, four hundred forty-three thousand, six hundred forty-two".