142157543 has 8 divisors (see below), whose sum is σ = 155174400. Its totient is φ = 129156280.

The previous prime is 142157539. The next prime is 142157551. The reversal of 142157543 is 345751241.

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

It is not a de Polignac number, because 142157543 - 2² = 142157539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142157513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23696 + ... + 29082.

It is an arithmetic number, because the mean of its divisors is an integer number (19396800).

Almost surely, 2^142157543 is an apocalyptic number.

142157543 is a deficient number, since it is larger than the sum of its proper divisors (13016857).

142157543 is a wasteful number, since it uses less digits than its factorization.

142157543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7797.

The product of its digits is 16800, while the sum is 32.

The square root of 142157543 is about 11922.9838127878. The cubic root of 142157543 is about 521.9032118469.

The spelling of 142157543 in words is "one hundred forty-two million, one hundred fifty-seven thousand, five hundred forty-three".