142343405 has 8 divisors (see below), whose sum is σ = 170876184. Its totient is φ = 113832000.

The previous prime is 142343393. The next prime is 142343417. The reversal of 142343405 is 504343241.

It is an interprime number because it is at equal distance from previous prime (142343393) and next prime (142343417).

It can be written as a sum of positive squares in 4 ways, for example, as 3433609 + 138909796 = 1853^2 + 11786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142343405 - 2¹⁶ = 142277869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22715 + ... + 28295.

It is an arithmetic number, because the mean of its divisors is an integer number (21359523).

Almost surely, 2^142343405 is an apocalyptic number.

It is an amenable number.

142343405 is a deficient number, since it is larger than the sum of its proper divisors (28532779).

142343405 is an equidigital number, since it uses as much as digits as its factorization.

142343405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10687.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 142343405 is about 11930.7755405925. The cubic root of 142343405 is about 522.1305646105.

Adding to 142343405 its reverse (504343241), we get a palindrome (646686646).

The spelling of 142343405 in words is "one hundred forty-two million, three hundred forty-three thousand, four hundred five".