1158141 has 4 divisors (see below), whose sum is σ = 1544192. Its totient is φ = 772092.

The previous prime is 1158139. The next prime is 1158161. The reversal of 1158141 is 1418511.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1418511 = 3 ⋅472837.

It is not a de Polignac number, because 1158141 - 2¹ = 1158139 is a prime.

It is a D-number.

It is a Duffinian number.

1158141 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158121) 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, 193021 + ... + 193026.

It is an arithmetic number, because the mean of its divisors is an integer number (386048).

2^1158141 is an apocalyptic number.

It is an amenable number.

1158141 is a deficient number, since it is larger than the sum of its proper divisors (386051).

1158141 is an equidigital number, since it uses as much as digits as its factorization.

1158141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386050.

The product of its digits is 160, while the sum is 21.

The square root of 1158141 is about 1076.1695962998. The cubic root of 1158141 is about 105.0155985896.

It can be divided in two parts, 115 and 8141, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 1158141 in words is "one million, one hundred fifty-eight thousand, one hundred forty-one".