142787121 has 8 divisors (see below), whose sum is σ = 190465344. Its totient is φ = 95150160.

The previous prime is 142787119. The next prime is 142787143. The reversal of 142787121 is 121787241.

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

It is not a de Polignac number, because 142787121 - 2¹ = 142787119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142787101) 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, 1050 + ... + 16931.

It is an arithmetic number, because the mean of its divisors is an integer number (23808168).

Almost surely, 2^142787121 is an apocalyptic number.

It is an amenable number.

142787121 is a deficient number, since it is larger than the sum of its proper divisors (47678223).

142787121 is a wasteful number, since it uses less digits than its factorization.

142787121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20631.

The product of its digits is 6272, while the sum is 33.

The square root of 142787121 is about 11949.3565098711. The cubic root of 142787121 is about 522.6725341556.

The spelling of 142787121 in words is "one hundred forty-two million, seven hundred eighty-seven thousand, one hundred twenty-one".