402332671 has 4 divisors (see below), whose sum is σ = 433281352. Its totient is φ = 371383992.

The previous prime is 402332653. The next prime is 402332681. The reversal of 402332671 is 176233204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402332671 - 2¹¹ = 402330623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402332681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15474321 + ... + 15474346.

It is an arithmetic number, because the mean of its divisors is an integer number (108320338).

Almost surely, 2^402332671 is an apocalyptic number.

402332671 is a deficient number, since it is larger than the sum of its proper divisors (30948681).

402332671 is a wasteful number, since it uses less digits than its factorization.

402332671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30948680.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 402332671 is about 20058.2320008519. The cubic root of 402332671 is about 738.2357967701.

Adding to 402332671 its reverse (176233204), we get a palindrome (578565875).

The spelling of 402332671 in words is "four hundred two million, three hundred thirty-two thousand, six hundred seventy-one".