142758349 has 4 divisors (see below), whose sum is σ = 144171900. Its totient is φ = 141344800.

The previous prime is 142758337. The next prime is 142758359. The reversal of 142758349 is 943857241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 943857241 = 5087 ⋅185543.

It can be written as a sum of positive squares in 2 ways, for example, as 87553449 + 55204900 = 9357^2 + 7430^2 .

It is a cyclic number.

It is not a de Polignac number, because 142758349 - 2⁹ = 142757837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142758359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706624 + ... + 706825.

It is an arithmetic number, because the mean of its divisors is an integer number (36042975).

Almost surely, 2^142758349 is an apocalyptic number.

It is an amenable number.

142758349 is a deficient number, since it is larger than the sum of its proper divisors (1413551).

142758349 is a wasteful number, since it uses less digits than its factorization.

142758349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413550.

The product of its digits is 241920, while the sum is 43.

The square root of 142758349 is about 11948.1525350156. The cubic root of 142758349 is about 522.6374251433.

The spelling of 142758349 in words is "one hundred forty-two million, seven hundred fifty-eight thousand, three hundred forty-nine".