142178417 has 2 divisors, whose sum is σ = 142178418. Its totient is φ = 142178416.

The previous prime is 142178389. The next prime is 142178441. The reversal of 142178417 is 714871241.

142178417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138321121 + 3857296 = 11761^2 + 1964^2 .

It is a cyclic number.

It is not a de Polignac number, because 142178417 - 2⁶ = 142178353 is a prime.

It is not a weakly prime, because it can be changed into another prime (142178467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71089208 + 71089209.

It is an arithmetic number, because the mean of its divisors is an integer number (71089209).

Almost surely, 2^142178417 is an apocalyptic number.

It is an amenable number.

142178417 is a deficient number, since it is larger than the sum of its proper divisors (1).

142178417 is an equidigital number, since it uses as much as digits as its factorization.

142178417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12544, while the sum is 35.

The square root of 142178417 is about 11923.8591487823. The cubic root of 142178417 is about 521.9287555131.

The spelling of 142178417 in words is "one hundred forty-two million, one hundred seventy-eight thousand, four hundred seventeen".