1402340243 has 2 divisors, whose sum is σ = 1402340244. Its totient is φ = 1402340242.

The previous prime is 1402340231. The next prime is 1402340267. The reversal of 1402340243 is 3420432041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1402340243 - 2⁴ = 1402340227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1402340743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701170121 + 701170122.

It is an arithmetic number, because the mean of its divisors is an integer number (701170122).

Almost surely, 2^1402340243 is an apocalyptic number.

1402340243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402340243 is an equidigital number, since it uses as much as digits as its factorization.

1402340243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1402340243 is about 37447.8336222538. The cubic root of 1402340243 is about 1119.3119293589.

Adding to 1402340243 its reverse (3420432041), we get a palindrome (4822772284).

The spelling of 1402340243 in words is "one billion, four hundred two million, three hundred forty thousand, two hundred forty-three".