1937421 has 12 divisors (see below), whose sum is σ = 2845180. Its totient is φ = 1270080.

The previous prime is 1937417. The next prime is 1937437. The reversal of 1937421 is 1247391.

It can be written as a sum of positive squares in 2 ways, for example, as 114921 + 1822500 = 339^2 + 1350^2 .

It is not a de Polignac number, because 1937421 - 2² = 1937417 is a prime.

It is a Duffinian number.

1937421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1937401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1216 + ... + 2313.

2^1937421 is an apocalyptic number.

It is an amenable number.

1937421 is a deficient number, since it is larger than the sum of its proper divisors (907759).

1937421 is a wasteful number, since it uses less digits than its factorization.

1937421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596 (or 3593 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1937421 is about 1391.9127127805. The cubic root of 1937421 is about 124.6640794008.

The spelling of 1937421 in words is "one million, nine hundred thirty-seven thousand, four hundred twenty-one".