142478987 has 8 divisors (see below), whose sum is σ = 162907872. Its totient is φ = 122068800.

The previous prime is 142478939. The next prime is 142479011. The reversal of 142478987 is 789874241.

142478987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 142478987 - 2¹⁶ = 142413451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142478927) 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, 21287 + ... + 27167.

It is an arithmetic number, because the mean of its divisors is an integer number (20363484).

Almost surely, 2^142478987 is an apocalyptic number.

142478987 is a deficient number, since it is larger than the sum of its proper divisors (20428885).

142478987 is an equidigital number, since it uses as much as digits as its factorization.

142478987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349.

The product of its digits is 903168, while the sum is 50.

The square root of 142478987 is about 11936.4562161472. The cubic root of 142478987 is about 522.2962883446.

The spelling of 142478987 in words is "one hundred forty-two million, four hundred seventy-eight thousand, nine hundred eighty-seven".