1402605 has 24 divisors (see below), whose sum is σ = 2471040. Its totient is φ = 735840.

The previous prime is 1402603. The next prime is 1402673. The reversal of 1402605 is 5062041.

It is a happy number.

It is not a de Polignac number, because 1402605 - 2¹ = 1402603 is a prime.

1402605 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402603) 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 23 ways as a sum of consecutive naturals, for example, 2976 + ... + 3414.

It is an arithmetic number, because the mean of its divisors is an integer number (102960).

2^1402605 is an apocalyptic number.

1402605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1402605 is a deficient number, since it is larger than the sum of its proper divisors (1068435).

1402605 is a wasteful number, since it uses less digits than its factorization.

1402605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1402605 is about 1184.3162584378. The cubic root of 1402605 is about 111.9382365670.

Adding to 1402605 its reverse (5062041), we get a palindrome (6464646).

The spelling of 1402605 in words is "one million, four hundred two thousand, six hundred five".