142191343 has 6 divisors (see below), whose sum is σ = 162540456. Its totient is φ = 121851252.

The previous prime is 142191331. The next prime is 142191347. The reversal of 142191343 is 343191241.

It is not a de Polignac number, because 142191343 - 2¹⁷ = 142060271 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 (142191347) 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 5 ways as a sum of consecutive naturals, for example, 29296 + ... + 33802.

It is an arithmetic number, because the mean of its divisors is an integer number (27090076).

Almost surely, 2^142191343 is an apocalyptic number.

142191343 is a deficient number, since it is larger than the sum of its proper divisors (20349113).

142191343 is an frugal number, since it uses more digits than its factorization.

142191343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9021 (or 4514 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 142191343 is about 11924.4011589681. The cubic root of 142191343 is about 521.9445719002.

Multiplying 142191343 by its sum of digits (28), we get a square (3981357604 = 63098²).

The spelling of 142191343 in words is "one hundred forty-two million, one hundred ninety-one thousand, three hundred forty-three".