421135753 has 2 divisors, whose sum is σ = 421135754. Its totient is φ = 421135752.

The previous prime is 421135699. The next prime is 421135763. The reversal of 421135753 is 357531124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348494224 + 72641529 = 18668^2 + 8523^2 .

It is a cyclic number.

It is not a de Polignac number, because 421135753 - 2¹⁷ = 421004681 is a prime.

It is not a weakly prime, because it can be changed into another prime (421135763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210567876 + 210567877.

It is an arithmetic number, because the mean of its divisors is an integer number (210567877).

Almost surely, 2^421135753 is an apocalyptic number.

It is an amenable number.

421135753 is a deficient number, since it is larger than the sum of its proper divisors (1).

421135753 is an equidigital number, since it uses as much as digits as its factorization.

421135753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 31.

The square root of 421135753 is about 20521.5923602434. The cubic root of 421135753 is about 749.5616715779.

Adding to 421135753 its reverse (357531124), we get a palindrome (778666877).

The spelling of 421135753 in words is "four hundred twenty-one million, one hundred thirty-five thousand, seven hundred fifty-three".