423342343440 has 120 divisors (see below), whose sum is σ = 1421853870528. Its totient is φ = 112881035520.

The previous prime is 423342343429. The next prime is 423342343453. The reversal of 423342343440 is 44343243324.

423342343440 is a `hidden beast` number, since 4 + 233 + 42 + 343 + 4 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×423342343440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 423342343395 and 423342343404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11148967 + ... + 11186873.

Almost surely, 2^423342343440 is an apocalyptic number.

423342343440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423342343440 is an abundant number, since it is smaller than the sum of its proper divisors (998511527088).

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

423342343440 is a wasteful number, since it uses less digits than its factorization.

423342343440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53437 (or 53428 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 36.

Adding to 423342343440 its reverse (44343243324), we get a palindrome (467685586764).

The spelling of 423342343440 in words is "four hundred twenty-three billion, three hundred forty-two million, three hundred forty-three thousand, four hundred forty".