142918549 has 4 divisors (see below), whose sum is σ = 143946880. Its totient is φ = 141890220.

The previous prime is 142918487. The next prime is 142918553. The reversal of 142918549 is 945819241.

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 142918549 - 2⁷ = 142918421 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 (142118549) 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, 513957 + ... + 514234.

It is an arithmetic number, because the mean of its divisors is an integer number (35986720).

Almost surely, 2^142918549 is an apocalyptic number.

It is an amenable number.

142918549 is a deficient number, since it is larger than the sum of its proper divisors (1028331).

142918549 is a wasteful number, since it uses less digits than its factorization.

142918549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028330.

The product of its digits is 103680, while the sum is 43.

The square root of 142918549 is about 11954.8546206133. The cubic root of 142918549 is about 522.8328491284.

The spelling of 142918549 in words is "one hundred forty-two million, nine hundred eighteen thousand, five hundred forty-nine".