402236543 has 2 divisors, whose sum is σ = 402236544. Its totient is φ = 402236542.

The previous prime is 402236537. The next prime is 402236579. The reversal of 402236543 is 345632204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402236543 - 2¹² = 402232447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402236143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201118271 + 201118272.

It is an arithmetic number, because the mean of its divisors is an integer number (201118272).

Almost surely, 2^402236543 is an apocalyptic number.

402236543 is a deficient number, since it is larger than the sum of its proper divisors (1).

402236543 is an equidigital number, since it uses as much as digits as its factorization.

402236543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 402236543 is about 20055.8356345479. The cubic root of 402236543 is about 738.1769973500.

Adding to 402236543 its reverse (345632204), we get a palindrome (747868747).

The spelling of 402236543 in words is "four hundred two million, two hundred thirty-six thousand, five hundred forty-three".