1972130 has 24 divisors (see below), whose sum is σ = 3677076. Its totient is φ = 761280.

The previous prime is 1972129. The next prime is 1972133. The reversal of 1972130 is 312791.

It can be written as a sum of positive squares in 6 ways, for example, as 97969 + 1874161 = 313^2 + 1369^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1972096 and 1972105.

It is not an unprimeable number, because it can be changed into a prime (1972133) 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 11 ways as a sum of consecutive naturals, for example, 32300 + ... + 32360.

2^1972130 is an apocalyptic number.

1972130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1972130 is a deficient number, since it is larger than the sum of its proper divisors (1704946).

1972130 is an equidigital number, since it uses as much as digits as its factorization.

1972130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1972130 is about 1404.3254608530. The cubic root of 1972130 is about 125.4041320105.

The spelling of 1972130 in words is "one million, nine hundred seventy-two thousand, one hundred thirty".