421144135 has 8 divisors (see below), whose sum is σ = 507020976. Its totient is φ = 335816640.

The previous prime is 421144123. The next prime is 421144147. The reversal of 421144135 is 531441124.

It is an interprime number because it is at equal distance from previous prime (421144123) and next prime (421144147).

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

It is not a de Polignac number, because 421144135 - 2⁹ = 421143623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 135646 + ... + 138715.

It is an arithmetic number, because the mean of its divisors is an integer number (63377622).

Almost surely, 2^421144135 is an apocalyptic number.

421144135 is a deficient number, since it is larger than the sum of its proper divisors (85876841).

421144135 is a wasteful number, since it uses less digits than its factorization.

421144135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274673.

The product of its digits is 1920, while the sum is 25.

The square root of 421144135 is about 20521.7965831454. The cubic root of 421144135 is about 749.5666444670.

Adding to 421144135 its reverse (531441124), we get a palindrome (952585259).

The spelling of 421144135 in words is "four hundred twenty-one million, one hundred forty-four thousand, one hundred thirty-five".