421632142 has 8 divisors (see below), whose sum is σ = 632745000. Its totient is φ = 210717144.

The previous prime is 421632091. The next prime is 421632143. The reversal of 421632142 is 241236124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421632143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44017 + ... + 52732.

It is an arithmetic number, because the mean of its divisors is an integer number (79093125).

Almost surely, 2^421632142 is an apocalyptic number.

421632142 is a deficient number, since it is larger than the sum of its proper divisors (211112858).

421632142 is a wasteful number, since it uses less digits than its factorization.

421632142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98930.

The product of its digits is 2304, while the sum is 25.

The square root of 421632142 is about 20533.6831084927. The cubic root of 421632142 is about 749.8560565236.

Adding to 421632142 its reverse (241236124), we get a palindrome (662868266).

The spelling of 421632142 in words is "four hundred twenty-one million, six hundred thirty-two thousand, one hundred forty-two".