421304145 has 8 divisors (see below), whose sum is σ = 674086656. Its totient is φ = 224695536.

The previous prime is 421304129. The next prime is 421304159. The reversal of 421304145 is 541403124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421304145 - 2⁴ = 421304129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14043457 + ... + 14043486.

It is an arithmetic number, because the mean of its divisors is an integer number (84260832).

Almost surely, 2^421304145 is an apocalyptic number.

It is an amenable number.

421304145 is a deficient number, since it is larger than the sum of its proper divisors (252782511).

421304145 is a wasteful number, since it uses less digits than its factorization.

421304145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28086951.

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

The square root of 421304145 is about 20525.6947507265. The cubic root of 421304145 is about 749.6615628589.

Adding to 421304145 its reverse (541403124), we get a palindrome (962707269).

The spelling of 421304145 in words is "four hundred twenty-one million, three hundred four thousand, one hundred forty-five".