421320535 has 16 divisors (see below), whose sum is σ = 549365760. Its totient is φ = 309013920.

The previous prime is 421320527. The next prime is 421320539. The reversal of 421320535 is 535023124.

It is not a de Polignac number, because 421320535 - 2³ = 421320527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421320539) 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 15 ways as a sum of consecutive naturals, for example, 68587 + ... + 74476.

It is an arithmetic number, because the mean of its divisors is an integer number (34335360).

Almost surely, 2^421320535 is an apocalyptic number.

421320535 is a deficient number, since it is larger than the sum of its proper divisors (128045225).

421320535 is a wasteful number, since it uses less digits than its factorization.

421320535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143118.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 421320535 is about 20526.0940025130. The cubic root of 421320535 is about 749.6712840970.

Adding to 421320535 its reverse (535023124), we get a palindrome (956343659).

The spelling of 421320535 in words is "four hundred twenty-one million, three hundred twenty thousand, five hundred thirty-five".