1967121 has 48 divisors (see below), whose sum is σ = 3459456. Its totient is φ = 1064448.

The previous prime is 1967107. The next prime is 1967129. The reversal of 1967121 is 1217691.

It is a de Polignac number, because none of the positive numbers 2^k-1967121 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1967129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45726 + ... + 45768.

It is an arithmetic number, because the mean of its divisors is an integer number (72072).

2^1967121 is an apocalyptic number.

It is an amenable number.

1967121 is a deficient number, since it is larger than the sum of its proper divisors (1492335).

1967121 is a wasteful number, since it uses less digits than its factorization.

1967121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 99 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 1967121 is about 1402.5409084943. The cubic root of 1967121 is about 125.2978709527.

The spelling of 1967121 in words is "one million, nine hundred sixty-seven thousand, one hundred twenty-one".