423442506 has 32 divisors (see below), whose sum is σ = 869214528. Its totient is φ = 137439360.

The previous prime is 423442501. The next prime is 423442519. The reversal of 423442506 is 605244324.

It is not an unprimeable number, because it can be changed into a prime (423442501) 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, 156840 + ... + 159516.

It is an arithmetic number, because the mean of its divisors is an integer number (27162954).

Almost surely, 2^423442506 is an apocalyptic number.

423442506 is an abundant number, since it is smaller than the sum of its proper divisors (445772022).

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

423442506 is a wasteful number, since it uses less digits than its factorization.

423442506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 423442506 is about 20577.7186782209. The cubic root of 423442506 is about 750.9277443585.

It can be divided in two parts, 42344 and 2506, that added together give a triangular number (44850 = T₂₉₉).

The spelling of 423442506 in words is "four hundred twenty-three million, four hundred forty-two thousand, five hundred six".