421143245 has 16 divisors (see below), whose sum is σ = 518700672. Its totient is φ = 328144320.

The previous prime is 421143241. The next prime is 421143253. The reversal of 421143245 is 542341124.

It is not a de Polignac number, because 421143245 - 2² = 421143241 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421143241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22319 + ... + 36611.

It is an arithmetic number, because the mean of its divisors is an integer number (32418792).

Almost surely, 2^421143245 is an apocalyptic number.

It is an amenable number.

421143245 is a deficient number, since it is larger than the sum of its proper divisors (97557427).

421143245 is a wasteful number, since it uses less digits than its factorization.

421143245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14452.

The product of its digits is 3840, while the sum is 26.

The square root of 421143245 is about 20521.7748988727. The cubic root of 421143245 is about 749.5661164492.

Adding to 421143245 its reverse (542341124), we get a palindrome (963484369).

The spelling of 421143245 in words is "four hundred twenty-one million, one hundred forty-three thousand, two hundred forty-five".