402144432243 has 32 divisors (see below), whose sum is σ = 552680755200. Its totient is φ = 259906006656.

The previous prime is 402144432191. The next prime is 402144432251. The reversal of 402144432243 is 342234441204.

It is not a de Polignac number, because 402144432243 - 2⁸ = 402144431987 is a prime.

It is a super-2 number, since 2×402144432243² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402144432253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57339205 + ... + 57346217.

It is an arithmetic number, because the mean of its divisors is an integer number (17271273600).

Almost surely, 2^402144432243 is an apocalyptic number.

402144432243 is a deficient number, since it is larger than the sum of its proper divisors (150536322957).

402144432243 is a wasteful number, since it uses less digits than its factorization.

402144432243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8851.

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 402144432243 its reverse (342234441204), we get a palindrome (744378873447).

The spelling of 402144432243 in words is "four hundred two billion, one hundred forty-four million, four hundred thirty-two thousand, two hundred forty-three".