1154142 has 64 divisors (see below), whose sum is σ = 2937600. Its totient is φ = 332640.

The previous prime is 1154129. The next prime is 1154159. The reversal of 1154142 is 2414511.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 17193 + ... + 17259.

It is an arithmetic number, because the mean of its divisors is an integer number (45900).

2^1154142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1154142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468800).

1154142 is an abundant number, since it is smaller than the sum of its proper divisors (1783458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1154142 is a wasteful number, since it uses less digits than its factorization.

1154142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 112 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 1154142 is about 1074.3100111234. The cubic root of 1154142 is about 104.8945880875.

Adding to 1154142 its reverse (2414511), we get a palindrome (3568653).

It can be divided in two parts, 1154 and 142, that added together give a 4-th power (1296 = 6⁴).

The spelling of 1154142 in words is "one million, one hundred fifty-four thousand, one hundred forty-two".