423223040 has 36 divisors (see below), whose sum is σ = 1013754504. Its totient is φ = 169288704.

The previous prime is 423223001. The next prime is 423223049. The reversal of 423223040 is 40322324.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423223049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164042 + ... + 166601.

Almost surely, 2^423223040 is an apocalyptic number.

423223040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423223040 is an abundant number, since it is smaller than the sum of its proper divisors (590531464).

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

423223040 is an equidigital number, since it uses as much as digits as its factorization.

423223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330664 (or 330650 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 423223040 is about 20572.3853745743. The cubic root of 423223040 is about 750.7979891684.

Adding to 423223040 its reverse (40322324), we get a palindrome (463545364).

It can be divided in two parts, 4232230 and 40, that multiplied together give a triangular number (169289200 = T₁₈₄₀₀).

The spelling of 423223040 in words is "four hundred twenty-three million, two hundred twenty-three thousand, forty".