142643091 has 12 divisors (see below), whose sum is σ = 192031112. Its totient is φ = 94183968.

The previous prime is 142643069. The next prime is 142643099. The reversal of 142643091 is 190346241.

It is not a de Polignac number, because 142643091 - 2¹¹ = 142641043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142643099) 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 11 ways as a sum of consecutive naturals, for example, 32271 + ... + 36423.

Almost surely, 2^142643091 is an apocalyptic number.

142643091 is a deficient number, since it is larger than the sum of its proper divisors (49388021).

142643091 is an equidigital number, since it uses as much as digits as its factorization.

142643091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370 (or 4263 counting only the distinct ones).

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

The square root of 142643091 is about 11943.3283049575. The cubic root of 142643091 is about 522.4967343340.

The spelling of 142643091 in words is "one hundred forty-two million, six hundred forty-three thousand, ninety-one".