1299942 has 64 divisors (see below), whose sum is σ = 3494400. Its totient is φ = 349920.

The previous prime is 1299941. The next prime is 1299953. The reversal of 1299942 is 2499921.

It is a junction number, because it is equal to n+sod(n) for n = 1299897 and 1299906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7092 + ... + 7272.

It is an arithmetic number, because the mean of its divisors is an integer number (54600).

2^1299942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1747200).

1299942 is an abundant number, since it is smaller than the sum of its proper divisors (2194458).

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

1299942 is a wasteful number, since it uses less digits than its factorization.

1299942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 212 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 1299942 is about 1140.1499901329. The cubic root of 1299942 is about 109.1376651849.

It can be divided in two parts, 12999 and 42, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 1299942 in words is "one million, two hundred ninety-nine thousand, nine hundred forty-two".