8142549 has 16 divisors (see below), whose sum is σ = 11212992. Its totient is φ = 5253248.

The previous prime is 8142527. The next prime is 8142557. The reversal of 8142549 is 9452418.

It is a cyclic number.

It is not a de Polignac number, because 8142549 - 2⁵ = 8142517 is a prime.

It is a super-2 number, since 2×8142549² = 132602208434802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8142509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12889 + ... + 13505.

It is an arithmetic number, because the mean of its divisors is an integer number (700812).

Almost surely, 2^8142549 is an apocalyptic number.

It is an amenable number.

8142549 is a deficient number, since it is larger than the sum of its proper divisors (3070443).

8142549 is a wasteful number, since it uses less digits than its factorization.

8142549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its digits is 11520, while the sum is 33.

The square root of 8142549 is about 2853.5152005903. The cubic root of 8142549 is about 201.1809217286.

The spelling of 8142549 in words is "eight million, one hundred forty-two thousand, five hundred forty-nine".