402605343 has 32 divisors (see below), whose sum is σ = 687948800. Its totient is φ = 227937888.

The previous prime is 402605341. The next prime is 402605351. The reversal of 402605343 is 343506204.

It is not a de Polignac number, because 402605343 - 2¹ = 402605341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402605341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10830 + ... + 30372.

It is an arithmetic number, because the mean of its divisors is an integer number (21498400).

Almost surely, 2^402605343 is an apocalyptic number.

402605343 is a deficient number, since it is larger than the sum of its proper divisors (285343457).

402605343 is a wasteful number, since it uses less digits than its factorization.

402605343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19668 (or 19662 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 402605343 is about 20065.0278594374. The cubic root of 402605343 is about 738.4025333939.

The spelling of 402605343 in words is "four hundred two million, six hundred five thousand, three hundred forty-three".