142538419 has 2 divisors, whose sum is σ = 142538420. Its totient is φ = 142538418.

The previous prime is 142538381. The next prime is 142538441. The reversal of 142538419 is 914835241.

It is a strong prime.

It is an emirp because it is prime and its reverse (914835241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142538419 is a prime.

It is a super-2 number, since 2×142538419² = 40634401782039122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142538719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71269209 + 71269210.

It is an arithmetic number, because the mean of its divisors is an integer number (71269210).

Almost surely, 2^142538419 is an apocalyptic number.

142538419 is a deficient number, since it is larger than the sum of its proper divisors (1).

142538419 is an equidigital number, since it uses as much as digits as its factorization.

142538419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 142538419 is about 11938.9454726957. The cubic root of 142538419 is about 522.3688997489.

The spelling of 142538419 in words is "one hundred forty-two million, five hundred thirty-eight thousand, four hundred nineteen".