1219940 has 24 divisors (see below), whose sum is σ = 2583672. Its totient is φ = 483840.

The previous prime is 1219931. The next prime is 1219949. The reversal of 1219940 is 499121.

It is an interprime number because it is at equal distance from previous prime (1219931) and next prime (1219949).

It can be written as a sum of positive squares in 4 ways, for example, as 23104 + 1196836 = 152^2 + 1094^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3452 + ... + 3788.

It is an arithmetic number, because the mean of its divisors is an integer number (107653).

2^1219940 is an apocalyptic number.

1219940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1219940 is an abundant number, since it is smaller than the sum of its proper divisors (1363732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1219940 is a wasteful number, since it uses less digits than its factorization.

1219940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1219940 is about 1104.5089406610. The cubic root of 1219940 is about 106.8512212981.

The spelling of 1219940 in words is "one million, two hundred nineteen thousand, nine hundred forty".