142028949 has 16 divisors (see below), whose sum is σ = 196904960. Its totient is φ = 90964080.

The previous prime is 142028947. The next prime is 142028963. The reversal of 142028949 is 949820241.

It is not a de Polignac number, because 142028949 - 2¹ = 142028947 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 (142028941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7434 + ... + 18420.

It is an arithmetic number, because the mean of its divisors is an integer number (12306560).

Almost surely, 2^142028949 is an apocalyptic number.

It is an amenable number.

142028949 is a deficient number, since it is larger than the sum of its proper divisors (54876011).

142028949 is a wasteful number, since it uses less digits than its factorization.

142028949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11160.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 142028949 is about 11917.5898989687. The cubic root of 142028949 is about 521.7457952533.

The spelling of 142028949 in words is "one hundred forty-two million, twenty-eight thousand, nine hundred forty-nine".