142450644 has 96 divisors (see below), whose sum is σ = 395539200. Its totient is φ = 39871104.

The previous prime is 142450631. The next prime is 142450669. The reversal of 142450644 is 446054241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217822 + ... + 218474.

It is an arithmetic number, because the mean of its divisors is an integer number (4120200).

Almost surely, 2^142450644 is an apocalyptic number.

142450644 is a gapful number since it is divisible by the number (14) 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 142450644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197769600).

142450644 is an abundant number, since it is smaller than the sum of its proper divisors (253088556).

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

142450644 is a wasteful number, since it uses less digits than its factorization.

142450644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734 (or 718 counting only the distinct ones).

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

The square root of 142450644 is about 11935.2689119265. The cubic root of 142450644 is about 522.2616530024.

The spelling of 142450644 in words is "one hundred forty-two million, four hundred fifty thousand, six hundred forty-four".