142609402 has 16 divisors (see below), whose sum is σ = 242494560. Its totient is φ = 62355312.

The previous prime is 142609349. The next prime is 142609403. The reversal of 142609402 is 204906241.

It is not an unprimeable number, because it can be changed into a prime (142609403) 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, 143848 + ... + 144835.

It is an arithmetic number, because the mean of its divisors is an integer number (15155910).

Almost surely, 2^142609402 is an apocalyptic number.

142609402 is a deficient number, since it is larger than the sum of its proper divisors (99885158).

142609402 is a wasteful number, since it uses less digits than its factorization.

142609402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288717.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 142609402 is about 11941.9178526734. The cubic root of 142609402 is about 522.4555972126.

The spelling of 142609402 in words is "one hundred forty-two million, six hundred nine thousand, four hundred two".