142149194 has 16 divisors (see below), whose sum is σ = 232790976. Its totient is φ = 64562400.

The previous prime is 142149193. The next prime is 142149199. The reversal of 142149194 is 491941241.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142149191) 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 7 ways as a sum of consecutive naturals, for example, 52379 + ... + 55025.

It is an arithmetic number, because the mean of its divisors is an integer number (14549436).

Almost surely, 2^142149194 is an apocalyptic number.

142149194 is a deficient number, since it is larger than the sum of its proper divisors (90641782).

142149194 is a wasteful number, since it uses less digits than its factorization.

142149194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101.

The product of its digits is 10368, while the sum is 35.

The square root of 142149194 is about 11922.6336855579. The cubic root of 142149194 is about 521.8929944146.

The spelling of 142149194 in words is "one hundred forty-two million, one hundred forty-nine thousand, one hundred ninety-four".