142072644 has 48 divisors (see below), whose sum is σ = 381782016. Its totient is φ = 40279200.

The previous prime is 142072643. The next prime is 142072663. The reversal of 142072644 is 446270241.

It is not an unprimeable number, because it can be changed into a prime (142072643) 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, 4549 + ... + 17459.

It is an arithmetic number, because the mean of its divisors is an integer number (7953792).

Almost surely, 2^142072644 is an apocalyptic number.

142072644 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 142072644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190891008).

142072644 is an abundant number, since it is smaller than the sum of its proper divisors (239709372).

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

142072644 is a wasteful number, since it uses less digits than its factorization.

142072644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13056 (or 13054 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 142072644 is about 11919.4229726107. The cubic root of 142072644 is about 521.7992945462.

The spelling of 142072644 in words is "one hundred forty-two million, seventy-two thousand, six hundred forty-four".