421213245 has 32 divisors (see below), whose sum is σ = 682456320. Its totient is φ = 221829120.

The previous prime is 421213241. The next prime is 421213271. The reversal of 421213245 is 542312124.

It is not a de Polignac number, because 421213245 - 2² = 421213241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421213241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 452941 + ... + 453869.

It is an arithmetic number, because the mean of its divisors is an integer number (21326760).

Almost surely, 2^421213245 is an apocalyptic number.

It is an amenable number.

421213245 is a deficient number, since it is larger than the sum of its proper divisors (261243075).

421213245 is a wasteful number, since it uses less digits than its factorization.

421213245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285.

The product of its digits is 1920, while the sum is 24.

The square root of 421213245 is about 20523.4803335107. The cubic root of 421213245 is about 749.6076436667.

Adding to 421213245 its reverse (542312124), we get a palindrome (963525369).

The spelling of 421213245 in words is "four hundred twenty-one million, two hundred thirteen thousand, two hundred forty-five".