421142232 has 32 divisors (see below), whose sum is σ = 1203264000. Its totient is φ = 120326304.

The previous prime is 421142159. The next prime is 421142233. The reversal of 421142232 is 232241124.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 421142199 and 421142208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421142233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1253232 + ... + 1253567.

It is an arithmetic number, because the mean of its divisors is an integer number (37602000).

Almost surely, 2^421142232 is an apocalyptic number.

421142232 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

421142232 is an abundant number, since it is smaller than the sum of its proper divisors (782121768).

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

421142232 is a wasteful number, since it uses less digits than its factorization.

421142232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506815 (or 2506811 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 421142232 is about 20521.7502177568. The cubic root of 421142232 is about 749.5655154573.

Adding to 421142232 its reverse (232241124), we get a palindrome (653383356).

The spelling of 421142232 in words is "four hundred twenty-one million, one hundred forty-two thousand, two hundred thirty-two".