421143642 has 24 divisors (see below), whose sum is σ = 926099616. Its totient is φ = 138285576.

The previous prime is 421143631. The next prime is 421143659. The reversal of 421143642 is 246341124.

It is a happy number.

421143642 is a `hidden beast` number, since 4 + 2 + 1 + 14 + 3 + 642 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173398 + ... + 175809.

It is an arithmetic number, because the mean of its divisors is an integer number (38587484).

Almost surely, 2^421143642 is an apocalyptic number.

421143642 is an abundant number, since it is smaller than the sum of its proper divisors (504955974).

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

421143642 is a wasteful number, since it uses less digits than its factorization.

421143642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349282 (or 349279 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 421143642 is about 20521.7845715230. The cubic root of 421143642 is about 749.5663519809.

Adding to 421143642 its reverse (246341124), we get a palindrome (667484766).

The spelling of 421143642 in words is "four hundred twenty-one million, one hundred forty-three thousand, six hundred forty-two".