421143156 has 72 divisors (see below), whose sum is σ = 1269550464. Its totient is φ = 115093440.

The previous prime is 421143131. The next prime is 421143157. The reversal of 421143156 is 651341124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421143157) 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, 30535 + ... + 42126.

Almost surely, 2^421143156 is an apocalyptic number.

421143156 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

421143156 is an abundant number, since it is smaller than the sum of its proper divisors (848407308).

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

421143156 is a wasteful number, since it uses less digits than its factorization.

421143156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72701 (or 72696 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 421143156 is about 20521.7727304441. The cubic root of 421143156 is about 749.5660636474.

The spelling of 421143156 in words is "four hundred twenty-one million, one hundred forty-three thousand, one hundred fifty-six".