142183901 has 2 divisors, whose sum is σ = 142183902. Its totient is φ = 142183900.

The previous prime is 142183891. The next prime is 142183919. The reversal of 142183901 is 109381241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141372100 + 811801 = 11890^2 + 901^2 .

It is a cyclic number.

It is not a de Polignac number, because 142183901 - 2¹⁰ = 142182877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142186901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71091950 + 71091951.

It is an arithmetic number, because the mean of its divisors is an integer number (71091951).

Almost surely, 2^142183901 is an apocalyptic number.

It is an amenable number.

142183901 is a deficient number, since it is larger than the sum of its proper divisors (1).

142183901 is an equidigital number, since it uses as much as digits as its factorization.

142183901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 142183901 is about 11924.0891056718. The cubic root of 142183901 is about 521.9354659092.

The spelling of 142183901 in words is "one hundred forty-two million, one hundred eighty-three thousand, nine hundred one".