142561671 has 8 divisors (see below), whose sum is σ = 217236864. Its totient is φ = 81463800.

The previous prime is 142561649. The next prime is 142561687. The reversal of 142561671 is 176165241.

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

It is not a de Polignac number, because 142561671 - 2⁷ = 142561543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142561621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3394305 + ... + 3394346.

It is an arithmetic number, because the mean of its divisors is an integer number (27154608).

Almost surely, 2^142561671 is an apocalyptic number.

142561671 is a deficient number, since it is larger than the sum of its proper divisors (74675193).

142561671 is an equidigital number, since it uses as much as digits as its factorization.

142561671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788661.

The product of its digits is 10080, while the sum is 33.

The square root of 142561671 is about 11939.9192208323. The cubic root of 142561671 is about 522.3973025270.

The spelling of 142561671 in words is "one hundred forty-two million, five hundred sixty-one thousand, six hundred seventy-one".