1142149 has 4 divisors (see below), whose sum is σ = 1159264. Its totient is φ = 1125036.

The previous prime is 1142131. The next prime is 1142159. The reversal of 1142149 is 9412411.

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 1142149 - 2⁷ = 1142021 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 (1142129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8457 + ... + 8590.

It is an arithmetic number, because the mean of its divisors is an integer number (289816).

2^1142149 is an apocalyptic number.

It is an amenable number.

1142149 is a deficient number, since it is larger than the sum of its proper divisors (17115).

1142149 is an equidigital number, since it uses as much as digits as its factorization.

1142149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17114.

The product of its digits is 288, while the sum is 22.

The square root of 1142149 is about 1068.7137128343. The cubic root of 1142149 is about 104.5299929933.

The spelling of 1142149 in words is "one million, one hundred forty-two thousand, one hundred forty-nine".