1423122331240 has 32 divisors (see below), whose sum is σ = 3202122770280. Its totient is φ = 569231594752.

The previous prime is 1423122331199. The next prime is 1423122331243. The reversal of 1423122331240 is 421332213241.

It can be written as a sum of positive squares in 4 ways, for example, as 874311022116 + 548811309124 = 935046^2 + 740818^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1423122331199 and 1423122331208.

It is not an unprimeable number, because it can be changed into a prime (1423122331243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830862 + ... + 1880578.

Almost surely, 2^{1423122331240} is an apocalyptic number.

1423122331240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423122331240 is an abundant number, since it is smaller than the sum of its proper divisors (1779000439040).

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

1423122331240 is a wasteful number, since it uses less digits than its factorization.

1423122331240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083621 (or 1083617 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1423122331240 its reverse (421332213241), we get a palindrome (1844454544481).

The spelling of 1423122331240 in words is "one trillion, four hundred twenty-three billion, one hundred twenty-two million, three hundred thirty-one thousand, two hundred forty".