142401423 has 16 divisors (see below), whose sum is σ = 194902400. Its totient is φ = 92431584.

The previous prime is 142401421. The next prime is 142401439. The reversal of 142401423 is 324104241.

It is not a de Polignac number, because 142401423 - 2¹ = 142401421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142401423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142401421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43440 + ... + 46602.

It is an arithmetic number, because the mean of its divisors is an integer number (12181400).

Almost surely, 2^142401423 is an apocalyptic number.

142401423 is a deficient number, since it is larger than the sum of its proper divisors (52500977).

142401423 is a wasteful number, since it uses less digits than its factorization.

142401423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 142401423 is about 11933.2067358275. The cubic root of 142401423 is about 522.2014936812.

Adding to 142401423 its reverse (324104241), we get a palindrome (466505664).

The spelling of 142401423 in words is "one hundred forty-two million, four hundred one thousand, four hundred twenty-three".