142184890 has 16 divisors (see below), whose sum is σ = 256183560. Its totient is φ = 56818240.

The previous prime is 142184869. The next prime is 142184897. The reversal of 142184890 is 98481241.

142184890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 33212169 + 108972721 = 5763^2 + 10439^2 .

It is not an unprimeable number, because it can be changed into a prime (142184897) 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, 4680 + ... + 17500.

Almost surely, 2^142184890 is an apocalyptic number.

142184890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142184890 is a deficient number, since it is larger than the sum of its proper divisors (113998670).

142184890 is a wasteful number, since it uses less digits than its factorization.

142184890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13937.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 142184890 is about 11924.1305762726. The cubic root of 142184890 is about 521.9366760626.

The spelling of 142184890 in words is "one hundred forty-two million, one hundred eighty-four thousand, eight hundred ninety".