142691043 has 16 divisors (see below), whose sum is σ = 210477312. Its totient is φ = 85260000.

The previous prime is 142691041. The next prime is 142691051. The reversal of 142691043 is 340196241.

It is not a de Polignac number, because 142691043 - 2¹ = 142691041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142691043.

It is not an unprimeable number, because it can be changed into a prime (142691041) 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 15 ways as a sum of consecutive naturals, for example, 28108 + ... + 32793.

It is an arithmetic number, because the mean of its divisors is an integer number (13154832).

Almost surely, 2^142691043 is an apocalyptic number.

142691043 is a deficient number, since it is larger than the sum of its proper divisors (67786269).

142691043 is a wasteful number, since it uses less digits than its factorization.

142691043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60986.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 142691043 is about 11945.3356168841. The cubic root of 142691043 is about 522.5552766165. Note that the first 3 decimals are identical.

The spelling of 142691043 in words is "one hundred forty-two million, six hundred ninety-one thousand, forty-three".