142184920 has 32 divisors (see below), whose sum is σ = 320785920. Its totient is φ = 56719360.

The previous prime is 142184897. The next prime is 142184927. The reversal of 142184920 is 29481241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142184927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10680 + ... + 19960.

It is an arithmetic number, because the mean of its divisors is an integer number (10024560).

Almost surely, 2^142184920 is an apocalyptic number.

142184920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142184920 is an abundant number, since it is smaller than the sum of its proper divisors (178601000).

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

142184920 is a wasteful number, since it uses less digits than its factorization.

142184920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9675 (or 9671 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 142184920 is about 11924.1318342259. The cubic root of 142184920 is about 521.9367127709.

The spelling of 142184920 in words is "one hundred forty-two million, one hundred eighty-four thousand, nine hundred twenty".