142199493 has 4 divisors (see below), whose sum is σ = 189599328. Its totient is φ = 94799660.

The previous prime is 142199467. The next prime is 142199507. The reversal of 142199493 is 394991241.

142199493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142199493 - 2⁵ = 142199461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142199413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23699913 + ... + 23699918.

It is an arithmetic number, because the mean of its divisors is an integer number (47399832).

Almost surely, 2^142199493 is an apocalyptic number.

It is an amenable number.

142199493 is a deficient number, since it is larger than the sum of its proper divisors (47399835).

142199493 is an equidigital number, since it uses as much as digits as its factorization.

142199493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47399834.

The product of its digits is 69984, while the sum is 42.

The square root of 142199493 is about 11924.7428903100. The cubic root of 142199493 is about 521.9545438317.

The spelling of 142199493 in words is "one hundred forty-two million, one hundred ninety-nine thousand, four hundred ninety-three".