142638366 has 48 divisors (see below), whose sum is σ = 311164416. Its totient is φ = 43568928.

The previous prime is 142638359. The next prime is 142638407. The reversal of 142638366 is 663836241.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164851 + ... + 165713.

It is an arithmetic number, because the mean of its divisors is an integer number (6482592).

Almost surely, 2^142638366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142638366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155582208).

142638366 is an abundant number, since it is smaller than the sum of its proper divisors (168526050).

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

142638366 is a wasteful number, since it uses less digits than its factorization.

142638366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1044 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 142638366 is about 11943.1304941376. The cubic root of 142638366 is about 522.4909650995.

The spelling of 142638366 in words is "one hundred forty-two million, six hundred thirty-eight thousand, three hundred sixty-six".