4197121290 has 48 divisors (see below), whose sum is σ = 10917197928. Its totient is φ = 1118752128.

The previous prime is 4197121289. The next prime is 4197121301. The reversal of 4197121290 is 921217914.

It can be written as a sum of positive squares in 4 ways, for example, as 3794436801 + 402684489 = 61599^2 + 20067^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233712 + ... + 251028.

Almost surely, 2^4197121290 is an apocalyptic number.

4197121290 is an abundant number, since it is smaller than the sum of its proper divisors (6720076638).

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

4197121290 is a wasteful number, since it uses less digits than its factorization.

4197121290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20023 (or 20020 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 4197121290 is about 64785.1934472685. The cubic root of 4197121290 is about 1613.0599432684.

The spelling of 4197121290 in words is "four billion, one hundred ninety-seven million, one hundred twenty-one thousand, two hundred ninety".