142340004 has 60 divisors (see below), whose sum is σ = 384961500. Its totient is φ = 45807552.

The previous prime is 142339979. The next prime is 142340021. The reversal of 142340004 is 400043241.

It can be written as a sum of positive squares in 2 ways, for example, as 87609600 + 54730404 = 9360^2 + 7398^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 1822 + ... + 16970.

It is an arithmetic number, because the mean of its divisors is an integer number (6416025).

Almost surely, 2^142340004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142340004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192480750).

142340004 is an abundant number, since it is smaller than the sum of its proper divisors (242621496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142340004 is a wasteful number, since it uses less digits than its factorization.

142340004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15194 (or 15183 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142340004 is about 11930.6330091911. The cubic root of 142340004 is about 522.1264061689.

Adding to 142340004 its reverse (400043241), we get a palindrome (542383245).

The spelling of 142340004 in words is "one hundred forty-two million, three hundred forty thousand, four".