142609638 has 16 divisors (see below), whose sum is σ = 286069680. Its totient is φ = 47394816.

The previous prime is 142609633. The next prime is 142609639. The reversal of 142609638 is 836906241.

142609638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 142609596 and 142609605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142609631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33243 + ... + 37286.

It is an arithmetic number, because the mean of its divisors is an integer number (17879355).

Almost surely, 2^142609638 is an apocalyptic number.

142609638 is an abundant number, since it is smaller than the sum of its proper divisors (143460042).

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

142609638 is a wasteful number, since it uses less digits than its factorization.

142609638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70871.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 142609638 is about 11941.9277338292. The cubic root of 142609638 is about 522.4558854111.

The spelling of 142609638 in words is "one hundred forty-two million, six hundred nine thousand, six hundred thirty-eight".