1427878 has 4 divisors (see below), whose sum is σ = 2141820. Its totient is φ = 713938.

The previous prime is 1427851. The next prime is 1427879. The reversal of 1427878 is 8787241.

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 (1427879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356968 + ... + 356971.

It is an arithmetic number, because the mean of its divisors is an integer number (535455).

2^1427878 is an apocalyptic number.

1427878 is a deficient number, since it is larger than the sum of its proper divisors (713942).

1427878 is an equidigital number, since it uses as much as digits as its factorization.

1427878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713941.

The product of its digits is 25088, while the sum is 37.

The square root of 1427878 is about 1194.9384921409. The cubic root of 1427878 is about 112.6065624044.

The spelling of 1427878 in words is "one million, four hundred twenty-seven thousand, eight hundred seventy-eight".