402234132321 has 96 divisors (see below), whose sum is σ = 742624616448. Its totient is φ = 204479976960.

The previous prime is 402234132319. The next prime is 402234132331. The reversal of 402234132321 is 123231432204.

402234132321 is a `hidden beast` number, since 4 + 0 + 223 + 413 + 2 + 3 + 21 = 666.

It is not a de Polignac number, because 402234132321 - 2¹ = 402234132319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402234132331) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1286770 + ... + 1568516.

It is an arithmetic number, because the mean of its divisors is an integer number (7735673088).

Almost surely, 2^402234132321 is an apocalyptic number.

It is an amenable number.

402234132321 is a deficient number, since it is larger than the sum of its proper divisors (340390484127).

402234132321 is a wasteful number, since it uses less digits than its factorization.

402234132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281851 (or 281848 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 402234132321 its reverse (123231432204), we get a palindrome (525465564525).

The spelling of 402234132321 in words is "four hundred two billion, two hundred thirty-four million, one hundred thirty-two thousand, three hundred twenty-one".