1290342 has 16 divisors (see below), whose sum is σ = 2605680. Its totient is φ = 425952.

The previous prime is 1290329. The next prime is 1290371. The reversal of 1290342 is 2430921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333 + ... + 1640.

It is an arithmetic number, because the mean of its divisors is an integer number (162855).

2^1290342 is an apocalyptic number.

1290342 is an abundant number, since it is smaller than the sum of its proper divisors (1315338).

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

1290342 is a wasteful number, since it uses less digits than its factorization.

1290342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1290342 is about 1135.9322162876. The cubic root of 1290342 is about 108.8683425685.

The spelling of 1290342 in words is "one million, two hundred ninety thousand, three hundred forty-two".