142642642 has 8 divisors (see below), whose sum is σ = 223266816. Its totient is φ = 68220372.

The previous prime is 142642639. The next prime is 142642667. The reversal of 142642642 is 246246241.

It is a happy number.

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

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, 1550418 + ... + 1550509.

It is an arithmetic number, because the mean of its divisors is an integer number (27908352).

Almost surely, 2^142642642 is an apocalyptic number.

142642642 is a deficient number, since it is larger than the sum of its proper divisors (80624174).

142642642 is a wasteful number, since it uses less digits than its factorization.

142642642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100952.

The product of its digits is 18432, while the sum is 31.

The square root of 142642642 is about 11943.3095078374. The cubic root of 142642642 is about 522.4961861095.

Adding to 142642642 its reverse (246246241), we get a palindrome (388888883).

The spelling of 142642642 in words is "one hundred forty-two million, six hundred forty-two thousand, six hundred forty-two".