10142444440 has 64 divisors (see below), whose sum is σ = 23616632160. Its totient is φ = 3917122560.

The previous prime is 10142444423. The next prime is 10142444447. The reversal of 10142444440 is 4444424101.

It is a junction number, because it is equal to n+sod(n) for n = 10142444399 and 10142444408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10142444447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167724 + ... + 220036.

Almost surely, 2^10142444440 is an apocalyptic number.

10142444440 is a gapful number since it is divisible by the number (10) 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 10142444440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11808316080).

10142444440 is an abundant number, since it is smaller than the sum of its proper divisors (13474187720).

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

10142444440 is a wasteful number, since it uses less digits than its factorization.

10142444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52492 (or 52488 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 10142444440 its reverse (4444424101), we get a palindrome (14586868541).

The spelling of 10142444440 in words is "ten billion, one hundred forty-two million, four hundred forty-four thousand, four hundred forty".