421203042 has 48 divisors (see below), whose sum is σ = 1009390200. Its totient is φ = 126095616.

The previous prime is 421203019. The next prime is 421203043. The reversal of 421203042 is 240302124.

421203042 is a `hidden beast` number, since 421 + 203 + 0 + 42 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 356416641 + 64786401 = 18879^2 + 8049^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (421203043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15667 + ... + 32982.

Almost surely, 2^421203042 is an apocalyptic number.

421203042 is an abundant number, since it is smaller than the sum of its proper divisors (588187158).

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

421203042 is a wasteful number, since it uses less digits than its factorization.

421203042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48707 (or 48704 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 421203042 is about 20523.2317630533. The cubic root of 421203042 is about 749.6015910646.

Adding to 421203042 its reverse (240302124), we get a palindrome (661505166).

The spelling of 421203042 in words is "four hundred twenty-one million, two hundred three thousand, forty-two".