1971004 has 12 divisors (see below), whose sum is σ = 3942064. Its totient is φ = 844704.

The previous prime is 1970999. The next prime is 1971007. The reversal of 1971004 is 4001791.

1971004 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1971007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35169 + ... + 35224.

2^1971004 is an apocalyptic number.

1971004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1971004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1971004 is a wasteful number, since it uses less digits than its factorization.

1971004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70404 (or 70402 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1971004 is about 1403.9244993945. The cubic root of 1971004 is about 125.3802607080.

Adding to 1971004 its reverse (4001791), we get a palindrome (5972795).

The spelling of 1971004 in words is "one million, nine hundred seventy-one thousand, four".