1147212 has 36 divisors (see below), whose sum is σ = 3164616. Its totient is φ = 347520.

The previous prime is 1147193. The next prime is 1147213. The reversal of 1147212 is 2127411.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (1147213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1053 + ... + 1844.

It is an arithmetic number, because the mean of its divisors is an integer number (87906).

2^1147212 is an apocalyptic number.

1147212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1147212 is an abundant number, since it is smaller than the sum of its proper divisors (2017404).

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

1147212 is a wasteful number, since it uses less digits than its factorization.

1147212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918 (or 2913 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 1147212 is about 1071.0798289577. The cubic root of 1147212 is about 104.6842213423.

The spelling of 1147212 in words is "one million, one hundred forty-seven thousand, two hundred twelve".