142780971 has 8 divisors (see below), whose sum is σ = 194425344. Its totient is φ = 93161960.

The previous prime is 142780933. The next prime is 142781021. The reversal of 142780971 is 179087241.

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

It is a cyclic number.

It is not a de Polignac number, because 142780971 - 2¹⁰ = 142779947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142781971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506175 + ... + 506456.

It is an arithmetic number, because the mean of its divisors is an integer number (24303168).

Almost surely, 2^142780971 is an apocalyptic number.

142780971 is a deficient number, since it is larger than the sum of its proper divisors (51644373).

142780971 is a wasteful number, since it uses less digits than its factorization.

142780971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012681.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 142780971 is about 11949.0991710672. The cubic root of 142780971 is about 522.6650300189.

The spelling of 142780971 in words is "one hundred forty-two million, seven hundred eighty thousand, nine hundred seventy-one".