1972106 has 4 divisors (see below), whose sum is σ = 2958162. Its totient is φ = 986052.

The previous prime is 1972099. The next prime is 1972111. The reversal of 1972106 is 6012791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 990025 + 982081 = 995^2 + 991^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 493025 + ... + 493028.

2^1972106 is an apocalyptic number.

1972106 is a deficient number, since it is larger than the sum of its proper divisors (986056).

1972106 is an equidigital number, since it uses as much as digits as its factorization.

1972106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986055.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1972106 is about 1404.3169157993. The cubic root of 1972106 is about 125.4036233031.

Adding to 1972106 its reverse (6012791), we get a palindrome (7984897).

The spelling of 1972106 in words is "one million, nine hundred seventy-two thousand, one hundred six".