421145535 has 32 divisors (see below), whose sum is σ = 682536960. Its totient is φ = 221730048.

The previous prime is 421145531. The next prime is 421145561. The reversal of 421145535 is 535541124.

It is not a de Polignac number, because 421145535 - 2² = 421145531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421145531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457806 + ... + 458724.

It is an arithmetic number, because the mean of its divisors is an integer number (21329280).

Almost surely, 2^421145535 is an apocalyptic number.

421145535 is a deficient number, since it is larger than the sum of its proper divisors (261391425).

421145535 is a wasteful number, since it uses less digits than its factorization.

421145535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287.

The product of its digits is 12000, while the sum is 30.

The square root of 421145535 is about 20521.8306931911. The cubic root of 421145535 is about 749.5674750553.

Adding to 421145535 its reverse (535541124), we get a palindrome (956686659).

The spelling of 421145535 in words is "four hundred twenty-one million, one hundred forty-five thousand, five hundred thirty-five".