4123202440 has 128 divisors (see below), whose sum is σ = 11256537600. Its totient is φ = 1326919680.

The previous prime is 4123202437. The next prime is 4123202441. The reversal of 4123202440 is 442023214.

It is a happy number.

It is a super-2 number, since 2×4123202440² = 34001596722443907200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4123202441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2193421 + ... + 2195299.

It is an arithmetic number, because the mean of its divisors is an integer number (87941700).

Almost surely, 2^4123202440 is an apocalyptic number.

4123202440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4123202440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5628268800).

4123202440 is an abundant number, since it is smaller than the sum of its proper divisors (7133335160).

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

4123202440 is a wasteful number, since it uses less digits than its factorization.

4123202440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375 (or 2371 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4123202440 is about 64212.1673828255. The cubic root of 4123202440 is about 1603.5341721442.

Adding to 4123202440 its reverse (442023214), we get a palindrome (4565225654).

The spelling of 4123202440 in words is "four billion, one hundred twenty-three million, two hundred two thousand, four hundred forty".