423133420 has 24 divisors (see below), whose sum is σ = 935348400. Its totient is φ = 160345152.

The previous prime is 423133391. The next prime is 423133423. The reversal of 423133420 is 24331324.

It is a happy number.

It is a super-2 number, since 2×423133420² = 358083782241792800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423133391 and 423133400.

It is not an unprimeable number, because it can be changed into a prime (423133423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556375 + ... + 557134.

It is an arithmetic number, because the mean of its divisors is an integer number (38972850).

Almost surely, 2^423133420 is an apocalyptic number.

It is an amenable number.

423133420 is an abundant number, since it is smaller than the sum of its proper divisors (512214980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423133420 is a wasteful number, since it uses less digits than its factorization.

423133420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113537 (or 1113535 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 423133420 is about 20570.2070966726. The cubic root of 423133420 is about 750.7449901117.

Adding to 423133420 its reverse (24331324), we get a palindrome (447464744).

The spelling of 423133420 in words is "four hundred twenty-three million, one hundred thirty-three thousand, four hundred twenty".