1405045 has 8 divisors (see below), whose sum is σ = 1704024. Its totient is φ = 1112064.

The previous prime is 1405039. The next prime is 1405087. The reversal of 1405045 is 5405041.

It can be written as a sum of positive squares in 4 ways, for example, as 7921 + 1397124 = 89^2 + 1182^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1405045 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 964 + ... + 1933.

It is an arithmetic number, because the mean of its divisors is an integer number (213003).

2^1405045 is an apocalyptic number.

It is an amenable number.

1405045 is a deficient number, since it is larger than the sum of its proper divisors (298979).

1405045 is an equidigital number, since it uses as much as digits as its factorization.

1405045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1405045 is about 1185.3459410653. The cubic root of 1405045 is about 112.0031089698.

It can be divided in two parts, 14050 and 45, that multiplied together give a triangular number (632250 = T₁₁₂₄).

The spelling of 1405045 in words is "one million, four hundred five thousand, forty-five".