142101647 has 4 divisors (see below), whose sum is σ = 143508696. Its totient is φ = 140694600.

The previous prime is 142101643. The next prime is 142101679. The reversal of 142101647 is 746101241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142101647 - 2² = 142101643 is a prime.

It is a super-2 number, since 2×142101647² = 40385756160225218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142101643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 703373 + ... + 703574.

It is an arithmetic number, because the mean of its divisors is an integer number (35877174).

Almost surely, 2^142101647 is an apocalyptic number.

142101647 is a deficient number, since it is larger than the sum of its proper divisors (1407049).

142101647 is a wasteful number, since it uses less digits than its factorization.

142101647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407048.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 142101647 is about 11920.6395382127. The cubic root of 142101647 is about 521.8347991886.

Adding to 142101647 its reverse (746101241), we get a palindrome (888202888).

The spelling of 142101647 in words is "one hundred forty-two million, one hundred one thousand, six hundred forty-seven".