142342643 has 8 divisors (see below), whose sum is σ = 147514080. Its totient is φ = 137188800.

The previous prime is 142342631. The next prime is 142342667. The reversal of 142342643 is 346243241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142342643 - 2²⁰ = 141294067 is a prime.

It is a super-2 number, since 2×142342643² = 40522856032450898, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142347643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13346 + ... + 21512.

It is an arithmetic number, because the mean of its divisors is an integer number (18439260).

Almost surely, 2^142342643 is an apocalyptic number.

142342643 is a deficient number, since it is larger than the sum of its proper divisors (5171437).

142342643 is an equidigital number, since it uses as much as digits as its factorization.

142342643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8797.

The product of its digits is 13824, while the sum is 29.

The square root of 142342643 is about 11930.7436063307. The cubic root of 142342643 is about 522.1296329102.

Adding to 142342643 its reverse (346243241), we get a palindrome (488585884).

The spelling of 142342643 in words is "one hundred forty-two million, three hundred forty-two thousand, six hundred forty-three".