142334643 has 32 divisors (see below), whose sum is σ = 219651840. Its totient is φ = 81077760.

The previous prime is 142334641. The next prime is 142334663. The reversal of 142334643 is 346433241.

It is not a de Polignac number, because 142334643 - 2¹ = 142334641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142334643.

It is not an unprimeable number, because it can be changed into a prime (142334641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85071 + ... + 86727.

It is an arithmetic number, because the mean of its divisors is an integer number (6864120).

Almost surely, 2^142334643 is an apocalyptic number.

142334643 is a deficient number, since it is larger than the sum of its proper divisors (77317197).

142334643 is a wasteful number, since it uses less digits than its factorization.

142334643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827.

The product of its digits is 20736, while the sum is 30.

The square root of 142334643 is about 11930.4083333304. The cubic root of 142334643 is about 522.1198510785.

Adding to 142334643 its reverse (346433241), we get a palindrome (488767884).

The spelling of 142334643 in words is "one hundred forty-two million, three hundred thirty-four thousand, six hundred forty-three".