1427405 has 16 divisors (see below), whose sum is σ = 2073600. Its totient is φ = 920832.

The previous prime is 1427401. The next prime is 1427407. The reversal of 1427405 is 5047241.

It is a cyclic number.

It is not a de Polignac number, because 1427405 - 2² = 1427401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427401) 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 in 15 ways as a sum of consecutive naturals, for example, 605 + ... + 1794.

It is an arithmetic number, because the mean of its divisors is an integer number (129600).

2^1427405 is an apocalyptic number.

It is an amenable number.

1427405 is a deficient number, since it is larger than the sum of its proper divisors (646195).

1427405 is a wasteful number, since it uses less digits than its factorization.

1427405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 1427405 is about 1194.7405576107. The cubic root of 1427405 is about 112.5941269848.

The spelling of 1427405 in words is "one million, four hundred twenty-seven thousand, four hundred five".