142449185 has 16 divisors (see below), whose sum is σ = 176927232. Its totient is φ = 109987200.

The previous prime is 142449173. The next prime is 142449227. The reversal of 142449185 is 581944241.

It is not a de Polignac number, because 142449185 - 2⁶ = 142449121 is a prime.

It is a super-4 number, since 4×142449185⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 69830 + ... + 71840.

It is an arithmetic number, because the mean of its divisors is an integer number (11057952).

Almost surely, 2^142449185 is an apocalyptic number.

It is an amenable number.

142449185 is a deficient number, since it is larger than the sum of its proper divisors (34478047).

142449185 is a wasteful number, since it uses less digits than its factorization.

142449185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its digits is 46080, while the sum is 38.

The square root of 142449185 is about 11935.2077903990. The cubic root of 142449185 is about 522.2598699700.

The spelling of 142449185 in words is "one hundred forty-two million, four hundred forty-nine thousand, one hundred eighty-five".