142704647 has 16 divisors (see below), whose sum is σ = 153809280. Its totient is φ = 131923968.

The previous prime is 142704637. The next prime is 142704677. The reversal of 142704647 is 746407241.

It is a cyclic number.

It is not a de Polignac number, because 142704647 - 2²⁰ = 141656071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142704607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388658 + ... + 389024.

It is an arithmetic number, because the mean of its divisors is an integer number (9613080).

Almost surely, 2^142704647 is an apocalyptic number.

142704647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

142704647 is a deficient number, since it is larger than the sum of its proper divisors (11104633).

142704647 is a wasteful number, since it uses less digits than its factorization.

142704647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 142704647 is about 11945.9050305952. The cubic root of 142704647 is about 522.5718826952.

The spelling of 142704647 in words is "one hundred forty-two million, seven hundred four thousand, six hundred forty-seven".