402043605 has 16 divisors (see below), whose sum is σ = 643918464. Its totient is φ = 214207040.

The previous prime is 402043589. The next prime is 402043613. The reversal of 402043605 is 506340204.

It is not a de Polignac number, because 402043605 - 2⁴ = 402043589 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2467 + ... + 28463.

It is an arithmetic number, because the mean of its divisors is an integer number (40244904).

Almost surely, 2^402043605 is an apocalyptic number.

It is an amenable number.

402043605 is a deficient number, since it is larger than the sum of its proper divisors (241874859).

402043605 is a wasteful number, since it uses less digits than its factorization.

402043605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27036.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 402043605 is about 20051.0250361422. The cubic root of 402043605 is about 738.0589530685.

Adding to 402043605 its reverse (506340204), we get a palindrome (908383809).

The spelling of 402043605 in words is "four hundred two million, forty-three thousand, six hundred five".