4450406142 has 64 divisors (see below), whose sum is σ = 10968781824. Its totient is φ = 1172240640.

The previous prime is 4450406141. The next prime is 4450406153. The reversal of 4450406142 is 2416040544.

It is a happy number.

It is a super-2 number, since 2×4450406142² = 39612229657502648328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4450406141) 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, 463167 + ... + 472677.

It is an arithmetic number, because the mean of its divisors is an integer number (171387216).

Almost surely, 2^4450406142 is an apocalyptic number.

4450406142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 4450406142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5484390912).

4450406142 is an abundant number, since it is smaller than the sum of its proper divisors (6518375682).

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

4450406142 is a wasteful number, since it uses less digits than its factorization.

4450406142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10393.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 4450406142 is about 66711.3644141686. The cubic root of 4450406142 is about 1644.8761949551.

Adding to 4450406142 its reverse (2416040544), we get a palindrome (6866446686).

The spelling of 4450406142 in words is "four billion, four hundred fifty million, four hundred six thousand, one hundred forty-two".