142420349 has 2 divisors, whose sum is σ = 142420350. Its totient is φ = 142420348.

The previous prime is 142420319. The next prime is 142420357. The reversal of 142420349 is 943024241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71944324 + 70476025 = 8482^2 + 8395^2 .

It is a cyclic number.

It is not a de Polignac number, because 142420349 - 2⁸ = 142420093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142420319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71210174 + 71210175.

It is an arithmetic number, because the mean of its divisors is an integer number (71210175).

Almost surely, 2^142420349 is an apocalyptic number.

It is an amenable number.

142420349 is a deficient number, since it is larger than the sum of its proper divisors (1).

142420349 is an equidigital number, since it uses as much as digits as its factorization.

142420349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 142420349 is about 11933.9997067203. Note that the first 3 decimals coincide. The cubic root of 142420349 is about 522.2246272226.

The spelling of 142420349 in words is "one hundred forty-two million, four hundred twenty thousand, three hundred forty-nine".