1306442 has 8 divisors (see below), whose sum is σ = 1965600. Its totient is φ = 651244.

The previous prime is 1306439. The next prime is 1306447. The reversal of 1306442 is 2446031.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306447) 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 3 ways as a sum of consecutive naturals, for example, 59 + ... + 1617.

It is an arithmetic number, because the mean of its divisors is an integer number (245700).

2^1306442 is an apocalyptic number.

1306442 is a deficient number, since it is larger than the sum of its proper divisors (659158).

1306442 is a wasteful number, since it uses less digits than its factorization.

1306442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1306442 is about 1142.9969378787. The cubic root of 1306442 is about 109.3192670614.

The spelling of 1306442 in words is "one million, three hundred six thousand, four hundred forty-two".