1423091 has 2 divisors, whose sum is σ = 1423092. Its totient is φ = 1423090.

The previous prime is 1423073. The next prime is 1423111. The reversal of 1423091 is 1903241.

It is an a-pointer prime, because the next prime (1423111) can be obtained adding 1423091 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1423091 - 2¹⁴ = 1406707 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1423061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711545 + 711546.

It is an arithmetic number, because the mean of its divisors is an integer number (711546).

2^1423091 is an apocalyptic number.

1423091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423091 is an equidigital number, since it uses as much as digits as its factorization.

1423091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1423091 is about 1192.9337785477. The cubic root of 1423091 is about 112.4805826570.

The spelling of 1423091 in words is "one million, four hundred twenty-three thousand, ninety-one".