142185434 has 32 divisors (see below), whose sum is σ = 230757120. Its totient is φ = 65564352.

The previous prime is 142185431. The next prime is 142185443. The reversal of 142185434 is 434581241.

It is a self number, because there is not a number n which added to its sum of digits gives 142185434.

It is not an unprimeable number, because it can be changed into a prime (142185431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116612 + ... + 117824.

It is an arithmetic number, because the mean of its divisors is an integer number (7211160).

Almost surely, 2^142185434 is an apocalyptic number.

142185434 is a deficient number, since it is larger than the sum of its proper divisors (88571686).

142185434 is a wasteful number, since it uses less digits than its factorization.

142185434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334.

The product of its digits is 15360, while the sum is 32.

The square root of 142185434 is about 11924.1533871382. The cubic root of 142185434 is about 521.9373417057.

The spelling of 142185434 in words is "one hundred forty-two million, one hundred eighty-five thousand, four hundred thirty-four".