142454393 has 4 divisors (see below), whose sum is σ = 147049728. Its totient is φ = 137859060.

The previous prime is 142454371. The next prime is 142454401. The reversal of 142454393 is 393454241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142454393 - 2¹⁰ = 142453369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142454363) 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, 2297621 + ... + 2297682.

It is an arithmetic number, because the mean of its divisors is an integer number (36762432).

Almost surely, 2^142454393 is an apocalyptic number.

It is an amenable number.

142454393 is a deficient number, since it is larger than the sum of its proper divisors (4595335).

142454393 is an equidigital number, since it uses as much as digits as its factorization.

142454393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4595334.

The product of its digits is 51840, while the sum is 35.

The square root of 142454393 is about 11935.4259664245. The cubic root of 142454393 is about 522.2662345700.

The spelling of 142454393 in words is "one hundred forty-two million, four hundred fifty-four thousand, three hundred ninety-three".