1420045 has 8 divisors (see below), whose sum is σ = 1859040. Its totient is φ = 1032720.

The previous prime is 1420039. The next prime is 1420057. The reversal of 1420045 is 5400241.

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

It is not a de Polignac number, because 1420045 - 2³ = 1420037 is a prime.

It is an Ulam 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, 12855 + ... + 12964.

It is an arithmetic number, because the mean of its divisors is an integer number (232380).

2^1420045 is an apocalyptic number.

It is an amenable number.

1420045 is a deficient number, since it is larger than the sum of its proper divisors (438995).

1420045 is a wasteful number, since it uses less digits than its factorization.

1420045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25835.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1420045 is about 1191.6564102123. The cubic root of 1420045 is about 112.4002737632.

Adding to 1420045 its reverse (5400241), we get a palindrome (6820286).

The spelling of 1420045 in words is "one million, four hundred twenty thousand, forty-five".