142864 has 10 divisors (see below), whose sum is σ = 276830. Its totient is φ = 71424.

The previous prime is 142841. The next prime is 142867. The reversal of 142864 is 468241.

It can be written as a sum of positive squares in only one way, i.e., 85264 + 57600 = 292^2 + 240^2 .

It is not an unprimeable number, because it can be changed into a prime (142867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4449 + ... + 4480.

It is an arithmetic number, because the mean of its divisors is an integer number (27683).

2¹⁴²⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

142864 is a deficient number, since it is larger than the sum of its proper divisors (133966).

142864 is an equidigital number, since it uses as much as digits as its factorization.

142864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8937 (or 8931 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 142864 is about 377.9735440477. The cubic root of 142864 is about 52.2766322568.

Adding to 142864 its product of digits (1536), we get a square (144400 = 380²).

The spelling of 142864 in words is "one hundred forty-two thousand, eight hundred sixty-four".