423518312742 has 128 divisors (see below), whose sum is σ = 1041202003968. Its totient is φ = 112095705600.

The previous prime is 423518312719. The next prime is 423518312773. The reversal of 423518312742 is 247213815324.

It is a super-2 number, since 2×423518312742² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 423518312694 and 423518312703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16046817 + ... + 16073187.

It is an arithmetic number, because the mean of its divisors is an integer number (8134390656).

Almost surely, 2^423518312742 is an apocalyptic number.

423518312742 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 423518312742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520601001984).

423518312742 is an abundant number, since it is smaller than the sum of its proper divisors (617683691226).

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

423518312742 is a wasteful number, since it uses less digits than its factorization.

423518312742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26754.

The product of its digits is 322560, while the sum is 42.

The spelling of 423518312742 in words is "four hundred twenty-three billion, five hundred eighteen million, three hundred twelve thousand, seven hundred forty-two".