1579421 has 2 divisors, whose sum is σ = 1579422. Its totient is φ = 1579420.

The previous prime is 1579399. The next prime is 1579429. The reversal of 1579421 is 1249751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1473796 + 105625 = 1214^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1579421 - 2¹⁰ = 1578397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1579429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 789710 + 789711.

It is an arithmetic number, because the mean of its divisors is an integer number (789711).

2^1579421 is an apocalyptic number.

It is an amenable number.

1579421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1579421 is an equidigital number, since it uses as much as digits as its factorization.

1579421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 29.

The square root of 1579421 is about 1256.7501740601. The cubic root of 1579421 is about 116.4570995190.

The spelling of 1579421 in words is "one million, five hundred seventy-nine thousand, four hundred twenty-one".