1420655 has 4 divisors (see below), whose sum is σ = 1704792. Its totient is φ = 1136520.

The previous prime is 1420651. The next prime is 1420667. The reversal of 1420655 is 5560241.

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

It is not a de Polignac number, because 1420655 - 2² = 1420651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142061 + ... + 142070.

It is an arithmetic number, because the mean of its divisors is an integer number (426198).

2^1420655 is an apocalyptic number.

1420655 is a deficient number, since it is larger than the sum of its proper divisors (284137).

1420655 is an equidigital number, since it uses as much as digits as its factorization.

1420655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284136.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1420655 is about 1191.9123289907. The cubic root of 1420655 is about 112.4163658241.

Adding to 1420655 its reverse (5560241), we get a palindrome (6980896).

The spelling of 1420655 in words is "one million, four hundred twenty thousand, six hundred fifty-five".