142004424 has 16 divisors (see below), whose sum is σ = 355011120. Its totient is φ = 47334800.

The previous prime is 142004399. The next prime is 142004431. The reversal of 142004424 is 424400241.

It is a self number, because there is not a number n which added to its sum of digits gives 142004424.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2958402 + ... + 2958449.

It is an arithmetic number, because the mean of its divisors is an integer number (22188195).

Almost surely, 2^142004424 is an apocalyptic number.

It is an amenable number.

142004424 is an abundant number, since it is smaller than the sum of its proper divisors (213006696).

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

142004424 is a wasteful number, since it uses less digits than its factorization.

142004424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5916860 (or 5916856 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 142004424 is about 11916.5609132837. The cubic root of 142004424 is about 521.7157625210.

Adding to 142004424 its reverse (424400241), we get a palindrome (566404665).

The spelling of 142004424 in words is "one hundred forty-two million, four thousand, four hundred twenty-four".