1940521 has 8 divisors (see below), whose sum is σ = 2149344. Its totient is φ = 1737120.

The previous prime is 1940509. The next prime is 1940537. The reversal of 1940521 is 1250491.

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

It is not a de Polignac number, because 1940521 - 2¹⁷ = 1809449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1940492 and 1940501.

It is not an unprimeable number, because it can be changed into a prime (1940551) 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 7 ways as a sum of consecutive naturals, for example, 580 + ... + 2053.

It is an arithmetic number, because the mean of its divisors is an integer number (268668).

2^1940521 is an apocalyptic number.

1940521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1940521 is a deficient number, since it is larger than the sum of its proper divisors (208823).

1940521 is a wasteful number, since it uses less digits than its factorization.

1940521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1940521 is about 1393.0258432635. The cubic root of 1940521 is about 124.7305341895.

The spelling of 1940521 in words is "one million, nine hundred forty thousand, five hundred twenty-one".