1400543 has 2 divisors, whose sum is σ = 1400544. Its totient is φ = 1400542.

The previous prime is 1400527. The next prime is 1400557. The reversal of 1400543 is 3450041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1400543 - 2⁴ = 1400527 is a prime.

It is a Sophie Germain prime.

It is equal to p₁₀₇₁₆₂ and since 1400543 and 107162 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700271 + 700272.

It is an arithmetic number, because the mean of its divisors is an integer number (700272).

2^1400543 is an apocalyptic number.

1400543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400543 is an equidigital number, since it uses as much as digits as its factorization.

1400543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1400543 is about 1183.4453937550. The cubic root of 1400543 is about 111.8833553886.

Adding to 1400543 its reverse (3450041), we get a palindrome (4850584).

The spelling of 1400543 in words is "one million, four hundred thousand, five hundred forty-three".