1423078 has 4 divisors (see below), whose sum is σ = 2134620. Its totient is φ = 711538.

The previous prime is 1423073. The next prime is 1423091. The reversal of 1423078 is 8703241.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355768 + ... + 355771.

It is an arithmetic number, because the mean of its divisors is an integer number (533655).

2^1423078 is an apocalyptic number.

1423078 is a deficient number, since it is larger than the sum of its proper divisors (711542).

1423078 is an equidigital number, since it uses as much as digits as its factorization.

1423078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711541.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1423078 is about 1192.9283297835. The cubic root of 1423078 is about 112.4802401509.

The spelling of 1423078 in words is "one million, four hundred twenty-three thousand, seventy-eight".