423003261438 has 96 divisors (see below), whose sum is σ = 983615173632. Its totient is φ = 131137142400.

The previous prime is 423003261419. The next prime is 423003261449. The reversal of 423003261438 is 834162300324.

423003261438 is a `hidden beast` number, since 4 + 2 + 3 + 0 + 0 + 3 + 2 + 614 + 38 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1394845 + ... + 1670807.

It is an arithmetic number, because the mean of its divisors is an integer number (10245991392).

Almost surely, 2^423003261438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423003261438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491807586816).

423003261438 is an abundant number, since it is smaller than the sum of its proper divisors (560611912194).

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

423003261438 is a wasteful number, since it uses less digits than its factorization.

423003261438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276110 (or 276107 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 423003261438 in words is "four hundred twenty-three billion, three million, two hundred sixty-one thousand, four hundred thirty-eight".