142749213 has 16 divisors (see below), whose sum is σ = 192030720. Its totient is φ = 94321584.

The previous prime is 142749181. The next prime is 142749239. The reversal of 142749213 is 312947241.

It is not a de Polignac number, because 142749213 - 2⁵ = 142749181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142749253) 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 15 ways as a sum of consecutive naturals, for example, 253270 + ... + 253832.

It is an arithmetic number, because the mean of its divisors is an integer number (12001920).

Almost surely, 2^142749213 is an apocalyptic number.

It is an amenable number.

142749213 is a deficient number, since it is larger than the sum of its proper divisors (49281507).

142749213 is a wasteful number, since it uses less digits than its factorization.

142749213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168.

The product of its digits is 12096, while the sum is 33.

The square root of 142749213 is about 11947.7702103782. The cubic root of 142749213 is about 522.6262759592.

The spelling of 142749213 in words is "one hundred forty-two million, seven hundred forty-nine thousand, two hundred thirteen".