423422121040 has 40 divisors (see below), whose sum is σ = 984961902600. Its totient is φ = 169281885696.

The previous prime is 423422121011. The next prime is 423422121071. The reversal of 423422121040 is 40121224324.

It can be written as a sum of positive squares in 4 ways, for example, as 115170639424 + 308251481616 = 339368^2 + 555204^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 423422120996 and 423422121014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201899 + ... + 1513738.

It is an arithmetic number, because the mean of its divisors is an integer number (24624047565).

Almost surely, 2^423422121040 is an apocalyptic number.

423422121040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423422121040 is an abundant number, since it is smaller than the sum of its proper divisors (561539781560).

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

423422121040 is a wasteful number, since it uses less digits than its factorization.

423422121040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717599 (or 2717593 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 423422121040 its reverse (40121224324), we get a palindrome (463543345364).

The spelling of 423422121040 in words is "four hundred twenty-three billion, four hundred twenty-two million, one hundred twenty-one thousand, forty".