1299156 has 12 divisors (see below), whose sum is σ = 3031392. Its totient is φ = 433048.

The previous prime is 1299143. The next prime is 1299169. The reversal of 1299156 is 6519921.

It is an interprime number because it is at equal distance from previous prime (1299143) and next prime (1299169).

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

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 3 ways as a sum of consecutive naturals, for example, 54120 + ... + 54143.

It is an arithmetic number, because the mean of its divisors is an integer number (252616).

2^1299156 is an apocalyptic number.

It is an amenable number.

1299156 is an abundant number, since it is smaller than the sum of its proper divisors (1732236).

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

1299156 is a wasteful number, since it uses less digits than its factorization.

1299156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108270 (or 108268 counting only the distinct ones).

The product of its digits is 4860, while the sum is 33.

The square root of 1299156 is about 1139.8052465224. The cubic root of 1299156 is about 109.1156643315.

It can be divided in two parts, 129915 and 6, that added together give a palindrome (129921).

The spelling of 1299156 in words is "one million, two hundred ninety-nine thousand, one hundred fifty-six".