142111493 has 2 divisors, whose sum is σ = 142111494. Its totient is φ = 142111492.

The previous prime is 142111477. The next prime is 142111511. The reversal of 142111493 is 394111241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114211969 + 27899524 = 10687^2 + 5282^2 .

It is a cyclic number.

It is not a de Polignac number, because 142111493 - 2⁴ = 142111477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142711493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71055746 + 71055747.

It is an arithmetic number, because the mean of its divisors is an integer number (71055747).

Almost surely, 2^142111493 is an apocalyptic number.

It is an amenable number.

142111493 is a deficient number, since it is larger than the sum of its proper divisors (1).

142111493 is an equidigital number, since it uses as much as digits as its factorization.

142111493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 26.

The square root of 142111493 is about 11921.0525122575. The cubic root of 142111493 is about 521.8468512815.

The spelling of 142111493 in words is "one hundred forty-two million, one hundred eleven thousand, four hundred ninety-three".