421015245 has 16 divisors (see below), whose sum is σ = 769856640. Its totient is φ = 192464064.

The previous prime is 421015213. The next prime is 421015249. The reversal of 421015245 is 542510124.

It is not a de Polignac number, because 421015245 - 2⁵ = 421015213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421015249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2004730 + ... + 2004939.

It is an arithmetic number, because the mean of its divisors is an integer number (48116040).

Almost surely, 2^421015245 is an apocalyptic number.

It is an amenable number.

421015245 is a deficient number, since it is larger than the sum of its proper divisors (348841395).

421015245 is a wasteful number, since it uses less digits than its factorization.

421015245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009684.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 421015245 is about 20518.6560232389. The cubic root of 421015245 is about 749.4901690640.

Adding to 421015245 its reverse (542510124), we get a palindrome (963525369).

The spelling of 421015245 in words is "four hundred twenty-one million, fifteen thousand, two hundred forty-five".