421229288 has 8 divisors (see below), whose sum is σ = 789804930. Its totient is φ = 210614640.

The previous prime is 421229269. The next prime is 421229293. The reversal of 421229288 is 882922124.

It can be written as a sum of positive squares in only one way, i.e., 399120484 + 22108804 = 19978^2 + 4702^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×421229288² = 354868226137973888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26326823 + ... + 26326838.

Almost surely, 2^421229288 is an apocalyptic number.

It is an amenable number.

421229288 is a deficient number, since it is larger than the sum of its proper divisors (368575642).

421229288 is a wasteful number, since it uses less digits than its factorization.

421229288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52653667 (or 52653663 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 421229288 is about 20523.8711748052. The cubic root of 421229288 is about 749.6171604636.

The spelling of 421229288 in words is "four hundred twenty-one million, two hundred twenty-nine thousand, two hundred eighty-eight".