1402142243 has 2 divisors, whose sum is σ = 1402142244. Its totient is φ = 1402142242.

The previous prime is 1402142233. The next prime is 1402142251. The reversal of 1402142243 is 3422412041.

It is a strong prime.

It is an emirp because it is prime and its reverse (3422412041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1402142243 - 2⁶ = 1402142179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1402142213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701071121 + 701071122.

It is an arithmetic number, because the mean of its divisors is an integer number (701071122).

Almost surely, 2^1402142243 is an apocalyptic number.

1402142243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402142243 is an equidigital number, since it uses as much as digits as its factorization.

1402142243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1402142243 is about 37445.1898513013. The cubic root of 1402142243 is about 1119.2592473761.

Adding to 1402142243 its reverse (3422412041), we get a palindrome (4824554284).

The spelling of 1402142243 in words is "one billion, four hundred two million, one hundred forty-two thousand, two hundred forty-three".