421223470 has 32 divisors (see below), whose sum is σ = 769795488. Its totient is φ = 165931008.

The previous prime is 421223461. The next prime is 421223507. The reversal of 421223470 is 74322124.

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 15 ways as a sum of consecutive naturals, for example, 219234 + ... + 221146.

It is an arithmetic number, because the mean of its divisors is an integer number (24056109).

Almost surely, 2^421223470 is an apocalyptic number.

421223470 is a deficient number, since it is larger than the sum of its proper divisors (348572018).

421223470 is a wasteful number, since it uses less digits than its factorization.

421223470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 421223470 is about 20523.7294369225. The cubic root of 421223470 is about 749.6137092216.

Adding to 421223470 its reverse (74322124), we get a palindrome (495545594).

The spelling of 421223470 in words is "four hundred twenty-one million, two hundred twenty-three thousand, four hundred seventy".