142650019 has 2 divisors, whose sum is σ = 142650020. Its totient is φ = 142650018.

The previous prime is 142649999. The next prime is 142650031. The reversal of 142650019 is 910056241.

It is a strong prime.

It is an emirp because it is prime and its reverse (910056241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142650019 - 2¹³ = 142641827 is a prime.

It is a super-2 number, since 2×142650019² = 40698055841400722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142650419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71325009 + 71325010.

It is an arithmetic number, because the mean of its divisors is an integer number (71325010).

Almost surely, 2^142650019 is an apocalyptic number.

142650019 is a deficient number, since it is larger than the sum of its proper divisors (1).

142650019 is an equidigital number, since it uses as much as digits as its factorization.

142650019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 142650019 is about 11943.6183378405. The cubic root of 142650019 is about 522.5051932056.

The spelling of 142650019 in words is "one hundred forty-two million, six hundred fifty thousand, nineteen".