142669274 has 16 divisors (see below), whose sum is σ = 233909856. Its totient is φ = 64724400.

The previous prime is 142669259. The next prime is 142669279. The reversal of 142669274 is 472966241.

It is not an unprimeable number, because it can be changed into a prime (142669279) 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, 5909 + ... + 17895.

It is an arithmetic number, because the mean of its divisors is an integer number (14619366).

Almost surely, 2^142669274 is an apocalyptic number.

142669274 is a deficient number, since it is larger than the sum of its proper divisors (91240582).

142669274 is a wasteful number, since it uses less digits than its factorization.

142669274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12541.

The product of its digits is 145152, while the sum is 41.

The square root of 142669274 is about 11944.4243896472. The cubic root of 142669274 is about 522.5287015208.

The spelling of 142669274 in words is "one hundred forty-two million, six hundred sixty-nine thousand, two hundred seventy-four".