142019402 has 16 divisors (see below), whose sum is σ = 243622080. Its totient is φ = 60825408.

The previous prime is 142019399. The next prime is 142019413. The reversal of 142019402 is 204910241.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30578 + ... + 34914.

It is an arithmetic number, because the mean of its divisors is an integer number (15226380).

Almost surely, 2^142019402 is an apocalyptic number.

142019402 is a deficient number, since it is larger than the sum of its proper divisors (101602678).

142019402 is a wasteful number, since it uses less digits than its factorization.

142019402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 142019402 is about 11917.1893498425. The cubic root of 142019402 is about 521.7341046350.

Adding to 142019402 its reverse (204910241), we get a palindrome (346929643).

The spelling of 142019402 in words is "one hundred forty-two million, nineteen thousand, four hundred two".