421029361 has 15 divisors (see below), whose sum is σ = 453732733. Its totient is φ = 390681760.

The previous prime is 421029347. The next prime is 421029377. The reversal of 421029361 is 163920124.

The square root of 421029361 is 20519.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 130667761 + 290361600 = 11431^2 + 17040^2 .

It is not a de Polignac number, because 421029361 - 2¹⁵ = 420996593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421029391) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 5929956 + ... + 5930026.

Almost surely, 2^421029361 is an apocalyptic number.

421029361 is the 20519-th square number.

421029361 is the 10260-th centered octagonal number.

It is an amenable number.

421029361 is a deficient number, since it is larger than the sum of its proper divisors (32703372).

421029361 is an frugal number, since it uses more digits than its factorization.

421029361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The cubic root of 421029361 is about 749.4985453917.

Adding to 421029361 its reverse (163920124), we get a palindrome (584949485).

The spelling of 421029361 in words is "four hundred twenty-one million, twenty-nine thousand, three hundred sixty-one".