142798423 has 4 divisors (see below), whose sum is σ = 143079480. Its totient is φ = 142517368.

The previous prime is 142798391. The next prime is 142798427. The reversal of 142798423 is 324897241.

142798423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324897241 = 23 ⋅14125967.

It is a cyclic number.

It is not a de Polignac number, because 142798423 - 2⁵ = 142798391 is a prime.

It is a super-2 number, since 2×142798423² = 40782779222573858, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142798427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139765 + ... + 140782.

It is an arithmetic number, because the mean of its divisors is an integer number (35769870).

Almost surely, 2^142798423 is an apocalyptic number.

142798423 is a deficient number, since it is larger than the sum of its proper divisors (281057).

142798423 is an equidigital number, since it uses as much as digits as its factorization.

142798423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281056.

The product of its digits is 96768, while the sum is 40.

The square root of 142798423 is about 11949.8294130084. The cubic root of 142798423 is about 522.6863241228.

The spelling of 142798423 in words is "one hundred forty-two million, seven hundred ninety-eight thousand, four hundred twenty-three".