423420203444 has 12 divisors (see below), whose sum is σ = 846840406944. Its totient is φ = 181465801464.

The previous prime is 423420203417. The next prime is 423420203467. The reversal of 423420203444 is 444302024324.

423420203444 is an admirable number.

It is a super-2 number, since 2×423420203444² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 423420203444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7561075034 + ... + 7561075089.

It is an arithmetic number, because the mean of its divisors is an integer number (70570033912).

Almost surely, 2^423420203444 is an apocalyptic number.

It is an amenable number.

423420203444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

423420203444 is a wasteful number, since it uses less digits than its factorization.

423420203444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15122150134 (or 15122150132 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 423420203444 its reverse (444302024324), we get a palindrome (867722227768).

The spelling of 423420203444 in words is "four hundred twenty-three billion, four hundred twenty million, two hundred three thousand, four hundred forty-four".