1179421 has 2 divisors, whose sum is σ = 1179422. Its totient is φ = 1179420.

The previous prime is 1179419. The next prime is 1179427. The reversal of 1179421 is 1249711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1179396 + 25 = 1086^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 1179421 - 2¹ = 1179419 is a prime.

Together with 1179419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1179427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589710 + 589711.

It is an arithmetic number, because the mean of its divisors is an integer number (589711).

2^1179421 is an apocalyptic number.

It is an amenable number.

1179421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1179421 is an equidigital number, since it uses as much as digits as its factorization.

1179421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 25.

The square root of 1179421 is about 1086.0115100679. The cubic root of 1179421 is about 105.6548940280.

Subtracting from 1179421 its sum of digits (25), we obtain a square (1179396 = 1086²).

It can be divided in two parts, 1179 and 421, that added together give a square (1600 = 40²).

The spelling of 1179421 in words is "one million, one hundred seventy-nine thousand, four hundred twenty-one".