1155412 has 6 divisors (see below), whose sum is σ = 2021978. Its totient is φ = 577704.

The previous prime is 1155403. The next prime is 1155419. The reversal of 1155412 is 2145511.

It can be written as a sum of positive squares in only one way, i.e., 1153476 + 1936 = 1074^2 + 44^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1155412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144423 + ... + 144430.

2^1155412 is an apocalyptic number.

It is an amenable number.

1155412 is a deficient number, since it is larger than the sum of its proper divisors (866566).

1155412 is a wasteful number, since it uses less digits than its factorization.

1155412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288857 (or 288855 counting only the distinct ones).

The product of its digits is 200, while the sum is 19.

The square root of 1155412 is about 1074.9009256671. The cubic root of 1155412 is about 104.9330487777.

Subtracting 1155412 from its reverse (2145511), we obtain a palindrome (990099).

The spelling of 1155412 in words is "one million, one hundred fifty-five thousand, four hundred twelve".