142685136 has 180 divisors, whose sum is σ = 463095360. Its totient is φ = 40867200.

The previous prime is 142685129. The next prime is 142685141. The reversal of 142685136 is 631586241.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 142685136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 330841 + ... + 331271.

It is an arithmetic number, because the mean of its divisors is an integer number (2572752).

Almost surely, 2^142685136 is an apocalyptic number.

142685136 is a gapful number since it is divisible by the number (16) 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 142685136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231547680).

142685136 is an abundant number, since it is smaller than the sum of its proper divisors (320410224).

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

142685136 is a wasteful number, since it uses less digits than its factorization.

142685136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 466 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 142685136 is about 11945.0883630051. The cubic root of 142685136 is about 522.5480657536.

The spelling of 142685136 in words is "one hundred forty-two million, six hundred eighty-five thousand, one hundred thirty-six".