1290147 has 16 divisors (see below), whose sum is σ = 1868832. Its totient is φ = 788480.

The previous prime is 1290143. The next prime is 1290151. The reversal of 1290147 is 7410921.

It is an interprime number because it is at equal distance from previous prime (1290143) and next prime (1290151).

It is a cyclic number.

It is not a de Polignac number, because 1290147 - 2² = 1290143 is a prime.

It is an alternating number because its digits alternate between odd and even.

1290147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1290143) 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 15 ways as a sum of consecutive naturals, for example, 1783 + ... + 2399.

It is an arithmetic number, because the mean of its divisors is an integer number (116802).

2^1290147 is an apocalyptic number.

1290147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1290147 is a deficient number, since it is larger than the sum of its proper divisors (578685).

1290147 is a wasteful number, since it uses less digits than its factorization.

1290147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1290147 is about 1135.8463804582. The cubic root of 1290147 is about 108.8628581320.

The spelling of 1290147 in words is "one million, two hundred ninety thousand, one hundred forty-seven".