402543471 has 16 divisors (see below), whose sum is σ = 585865728. Its totient is φ = 243820800.

The previous prime is 402543433. The next prime is 402543497. The reversal of 402543471 is 174345204.

It is not a de Polignac number, because 402543471 - 2¹⁹ = 402019183 is a prime.

It is a super-3 number, since 3×402543471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402543871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85386 + ... + 89976.

It is an arithmetic number, because the mean of its divisors is an integer number (36616608).

Almost surely, 2^402543471 is an apocalyptic number.

402543471 is a deficient number, since it is larger than the sum of its proper divisors (183322257).

402543471 is a wasteful number, since it uses less digits than its factorization.

402543471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7262.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 402543471 is about 20063.4860131533. The cubic root of 402543471 is about 738.3647057935.

Adding to 402543471 its reverse (174345204), we get a palindrome (576888675).

The spelling of 402543471 in words is "four hundred two million, five hundred forty-three thousand, four hundred seventy-one".