1400045 has 4 divisors (see below), whose sum is σ = 1680060. Its totient is φ = 1120032.

The previous prime is 1400039. The next prime is 1400051. The reversal of 1400045 is 5400041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5400041 = 1471 ⋅3671.

It is an interprime number because it is at equal distance from previous prime (1400039) and next prime (1400051).

It can be written as a sum of positive squares in 2 ways, for example, as 1042441 + 357604 = 1021^2 + 598^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400045 - 2⁴ = 1400029 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 140000 + ... + 140009.

It is an arithmetic number, because the mean of its divisors is an integer number (420015).

2^1400045 is an apocalyptic number.

It is an amenable number.

1400045 is a deficient number, since it is larger than the sum of its proper divisors (280015).

1400045 is an equidigital number, since it uses as much as digits as its factorization.

1400045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280014.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 1400045 is about 1183.2349724379. The cubic root of 1400045 is about 111.8700927906.

Adding to 1400045 its reverse (5400041), we get a palindrome (6800086).

The spelling of 1400045 in words is "one million, four hundred thousand, forty-five".