1921130 has 8 divisors (see below), whose sum is σ = 3458052. Its totient is φ = 768448.

The previous prime is 1921123. The next prime is 1921133. The reversal of 1921130 is 311291.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1868689 + 52441 = 1367^2 + 229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1921099 and 1921108.

It is not an unprimeable number, because it can be changed into a prime (1921133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96047 + ... + 96066.

2^1921130 is an apocalyptic number.

1921130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1921130 is a deficient number, since it is larger than the sum of its proper divisors (1536922).

1921130 is a wasteful number, since it uses less digits than its factorization.

1921130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192120.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1921130 is about 1386.0483397054. The cubic root of 1921130 is about 124.3136786002.

The spelling of 1921130 in words is "one million, nine hundred twenty-one thousand, one hundred thirty".