1230156 has 18 divisors (see below), whose sum is σ = 3109652. Its totient is φ = 410040.

The previous prime is 1230127. The next prime is 1230167. The reversal of 1230156 is 6510321.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a nialpdrome in base 6.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17050 + ... + 17121.

2^1230156 is an apocalyptic number.

It is an amenable number.

1230156 is an abundant number, since it is smaller than the sum of its proper divisors (1879496).

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

1230156 is a wasteful number, since it uses less digits than its factorization.

1230156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34181 (or 34176 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1230156 is about 1109.1239786426. The cubic root of 1230156 is about 107.1486564480.

Adding to 1230156 its reverse (6510321), we get a palindrome (7740477).

The spelling of 1230156 in words is "one million, two hundred thirty thousand, one hundred fifty-six".