421729080 has 32 divisors (see below), whose sum is σ = 1265187600. Its totient is φ = 112461056.

The previous prime is 421729039. The next prime is 421729117. The reversal of 421729080 is 80927124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1757085 + ... + 1757324.

Almost surely, 2^421729080 is an apocalyptic number.

421729080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421729080 is an abundant number, since it is smaller than the sum of its proper divisors (843458520).

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

421729080 is a wasteful number, since it uses less digits than its factorization.

421729080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514423 (or 3514419 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 421729080 is about 20536.0434358715. The cubic root of 421729080 is about 749.9135189173.

The spelling of 421729080 in words is "four hundred twenty-one million, seven hundred twenty-nine thousand, eighty".