1037921 has 4 divisors (see below), whose sum is σ = 1083072. Its totient is φ = 992772.

The previous prime is 1037917. The next prime is 1037929. The reversal of 1037921 is 1297301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1297301 = 19 ⋅68279.

It is not a de Polignac number, because 1037921 - 2² = 1037917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 45127 = 1037921 / (1 + 0 + 3 + 7 + 9 + 2 + 1).

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1037929) 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, 22541 + ... + 22586.

It is an arithmetic number, because the mean of its divisors is an integer number (270768).

2^1037921 is an apocalyptic number.

It is an amenable number.

1037921 is a deficient number, since it is larger than the sum of its proper divisors (45151).

1037921 is an equidigital number, since it uses as much as digits as its factorization.

1037921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45150.

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

The square root of 1037921 is about 1018.7840791846. The cubic root of 1037921 is about 101.2483838588.

The spelling of 1037921 in words is "one million, thirty-seven thousand, nine hundred twenty-one".