1154172 has 12 divisors (see below), whose sum is σ = 2693096. Its totient is φ = 384720.

The previous prime is 1154159. The next prime is 1154173. The reversal of 1154172 is 2714511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1154172² = 2664226011168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154173) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 48079 + ... + 48102.

2^1154172 is an apocalyptic number.

1154172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1154172 is an abundant number, since it is smaller than the sum of its proper divisors (1538924).

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

1154172 is a wasteful number, since it uses less digits than its factorization.

1154172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96188 (or 96186 counting only the distinct ones).

The product of its digits is 280, while the sum is 21.

The square root of 1154172 is about 1074.3239734829. The cubic root of 1154172 is about 104.8954969330.

Adding to 1154172 its reverse (2714511), we get a palindrome (3868683).

It can be divided in two parts, 1154 and 172, that added together give a triangular number (1326 = T₅₁).

The spelling of 1154172 in words is "one million, one hundred fifty-four thousand, one hundred seventy-two".