142860217 has 2 divisors, whose sum is σ = 142860218. Its totient is φ = 142860216.

The previous prime is 142860191. The next prime is 142860227. The reversal of 142860217 is 712068241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72233001 + 70627216 = 8499^2 + 8404^2 .

It is a cyclic number.

It is not a de Polignac number, because 142860217 - 2¹⁵ = 142827449 is a prime.

It is not a weakly prime, because it can be changed into another prime (142860227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71430108 + 71430109.

It is an arithmetic number, because the mean of its divisors is an integer number (71430109).

Almost surely, 2^142860217 is an apocalyptic number.

It is an amenable number.

142860217 is a deficient number, since it is larger than the sum of its proper divisors (1).

142860217 is an equidigital number, since it uses as much as digits as its factorization.

142860217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 142860217 is about 11952.4146932743. The cubic root of 142860217 is about 522.7617082907.

The spelling of 142860217 in words is "one hundred forty-two million, eight hundred sixty thousand, two hundred seventeen".