142434091 has 4 divisors (see below), whose sum is σ = 142458232. Its totient is φ = 142409952.

The previous prime is 142434067. The next prime is 142434113. The reversal of 142434091 is 190434241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 142434091 - 2¹⁷ = 142303019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142434031) 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 3 ways as a sum of consecutive naturals, for example, 3331 + ... + 17203.

It is an arithmetic number, because the mean of its divisors is an integer number (35614558).

Almost surely, 2^142434091 is an apocalyptic number.

142434091 is a deficient number, since it is larger than the sum of its proper divisors (24141).

142434091 is a wasteful number, since it uses less digits than its factorization.

142434091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24140.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 142434091 is about 11934.5754428048. The cubic root of 142434091 is about 522.2414229967.

The spelling of 142434091 in words is "one hundred forty-two million, four hundred thirty-four thousand, ninety-one".