423242553 has 16 divisors (see below), whose sum is σ = 572748800. Its totient is φ = 277977744.

The previous prime is 423242509. The next prime is 423242639. The reversal of 423242553 is 355242324.

It is not a de Polignac number, because 423242553 - 2¹⁶ = 423177017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423242553.

It is not an unprimeable number, because it can be changed into a prime (423242753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58050 + ... + 64932.

It is an arithmetic number, because the mean of its divisors is an integer number (35796800).

Almost surely, 2^423242553 is an apocalyptic number.

It is an amenable number.

423242553 is a deficient number, since it is larger than the sum of its proper divisors (149506247).

423242553 is a wasteful number, since it uses less digits than its factorization.

423242553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7188.

The product of its digits is 28800, while the sum is 30.

The square root of 423242553 is about 20572.8596213555. The cubic root of 423242553 is about 750.8095276833.

Adding to 423242553 its reverse (355242324), we get a palindrome (778484877).

The spelling of 423242553 in words is "four hundred twenty-three million, two hundred forty-two thousand, five hundred fifty-three".