1290168 has 80 divisors (see below), whose sum is σ = 3963960. Its totient is φ = 388800.

The previous prime is 1290167. The next prime is 1290169. The reversal of 1290168 is 8610921.

It is an interprime number because it is at equal distance from previous prime (1290167) and next prime (1290169).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290161) 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 19 ways as a sum of consecutive naturals, for example, 7038 + ... + 7218.

2^1290168 is an apocalyptic number.

1290168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1290168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1981980).

1290168 is an abundant number, since it is smaller than the sum of its proper divisors (2673792).

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

1290168 is a wasteful number, since it uses less digits than its factorization.

1290168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1290168 is about 1135.8556246284. The cubic root of 1290168 is about 108.8634487902.

The spelling of 1290168 in words is "one million, two hundred ninety thousand, one hundred sixty-eight".