142685420 has 48 divisors (see below), whose sum is σ = 324051840. Its totient is φ = 52568064.

The previous prime is 142685419. The next prime is 142685429. The reversal of 142685420 is 24586241.

It is not an unprimeable number, because it can be changed into a prime (142685429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11516 + ... + 20444.

It is an arithmetic number, because the mean of its divisors is an integer number (6751080).

Almost surely, 2^142685420 is an apocalyptic number.

142685420 is a gapful number since it is divisible by the number (10) 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 142685420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162025920).

142685420 is an abundant number, since it is smaller than the sum of its proper divisors (181366420).

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

142685420 is a wasteful number, since it uses less digits than its factorization.

142685420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9002 (or 9000 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 142685420 is about 11945.1002507304. The cubic root of 142685420 is about 522.5484124460.

The spelling of 142685420 in words is "one hundred forty-two million, six hundred eighty-five thousand, four hundred twenty".