423279642 has 16 divisors (see below), whose sum is σ = 873868032. Its totient is φ = 136541760.

The previous prime is 423279641. The next prime is 423279691. The reversal of 423279642 is 246972324.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 423279642.

It is not an unprimeable number, because it can be changed into a prime (423279641) 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, 1137663 + ... + 1138034.

It is an arithmetic number, because the mean of its divisors is an integer number (54616752).

Almost surely, 2^423279642 is an apocalyptic number.

423279642 is an abundant number, since it is smaller than the sum of its proper divisors (450588390).

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

423279642 is a wasteful number, since it uses less digits than its factorization.

423279642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275733.

The product of its digits is 145152, while the sum is 39.

The square root of 423279642 is about 20573.7610076524. The cubic root of 423279642 is about 750.8314583399.

The spelling of 423279642 in words is "four hundred twenty-three million, two hundred seventy-nine thousand, six hundred forty-two".