1423124555440 has 80 divisors (see below), whose sum is σ = 3781600015680. Its totient is φ = 487908449280.

The previous prime is 1423124555381. The next prime is 1423124555497. The reversal of 1423124555440 is 445554213241.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1423124555393 and 1423124555402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21935850 + ... + 22000630.

It is an arithmetic number, because the mean of its divisors is an integer number (47270000196).

Almost surely, 2^{1423124555440} is an apocalyptic number.

1423124555440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423124555440 is an abundant number, since it is smaller than the sum of its proper divisors (2358475460240).

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

1423124555440 is a wasteful number, since it uses less digits than its factorization.

1423124555440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104030 (or 104024 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 1423124555440 its reverse (445554213241), we get a palindrome (1868678768681).

The spelling of 1423124555440 in words is "one trillion, four hundred twenty-three billion, one hundred twenty-four million, five hundred fifty-five thousand, four hundred forty".