420144532 has 12 divisors (see below), whose sum is σ = 735826336. Its totient is φ = 209908440.

The previous prime is 420144503. The next prime is 420144541. The reversal of 420144532 is 235441024.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 420144497 and 420144506.

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 3 ways as a sum of consecutive naturals, for example, 35094 + ... + 45517.

Almost surely, 2^420144532 is an apocalyptic number.

It is an amenable number.

420144532 is a deficient number, since it is larger than the sum of its proper divisors (315681804).

420144532 is a wasteful number, since it uses less digits than its factorization.

420144532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81918 (or 81916 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 420144532 is about 20497.4274483409. The cubic root of 420144532 is about 748.9731321798.

Adding to 420144532 its reverse (235441024), we get a palindrome (655585556).

The spelling of 420144532 in words is "four hundred twenty million, one hundred forty-four thousand, five hundred thirty-two".