4223123210440 has 64 divisors (see below), whose sum is σ = 9658287923760. Its totient is φ = 1661472414720.

The previous prime is 4223123210353. The next prime is 4223123210489. The reversal of 4223123210440 is 440123213224.

It can be written as a sum of positive squares in 8 ways, for example, as 752719348836 + 3470403861604 = 867594^2 + 1862902^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4223123210399 and 4223123210408.

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, 72968554 + ... + 73026406.

Almost surely, 2^{4223123210440} is an apocalyptic number.

4223123210440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4223123210440 is an abundant number, since it is smaller than the sum of its proper divisors (5435164713320).

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

4223123210440 is a wasteful number, since it uses less digits than its factorization.

4223123210440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87842 (or 87838 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 4223123210440 its reverse (440123213224), we get a palindrome (4663246423664).

The spelling of 4223123210440 in words is "four trillion, two hundred twenty-three billion, one hundred twenty-three million, two hundred ten thousand, four hundred forty".