142420123 has 2 divisors, whose sum is σ = 142420124. Its totient is φ = 142420122.

The previous prime is 142420111. The next prime is 142420193. The reversal of 142420123 is 321024241.

142420123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142420123 - 2¹³ = 142411931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142420123.

It is not a weakly prime, because it can be changed into another prime (142420193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71210061 + 71210062.

It is an arithmetic number, because the mean of its divisors is an integer number (71210062).

Almost surely, 2^142420123 is an apocalyptic number.

142420123 is a deficient number, since it is larger than the sum of its proper divisors (1).

142420123 is an equidigital number, since it uses as much as digits as its factorization.

142420123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 142420123 is about 11933.9902379715. The cubic root of 142420123 is about 522.2243509914.

Adding to 142420123 its reverse (321024241), we get a palindrome (463444364).

The spelling of 142420123 in words is "one hundred forty-two million, four hundred twenty thousand, one hundred twenty-three".