6409356242 has 16 divisors (see below), whose sum is σ = 9850751064. Its totient is φ = 3125808000.

The previous prime is 6409356227. The next prime is 6409356287. The reversal of 6409356242 is 2426539046.

It can be written as a sum of positive squares in 4 ways, for example, as 5961229681 + 448126561 = 77209^2 + 21169^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 6409356242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 718892 + ... + 727752.

Almost surely, 2^6409356242 is an apocalyptic number.

6409356242 is a deficient number, since it is larger than the sum of its proper divisors (3441394822).

6409356242 is a wasteful number, since it uses less digits than its factorization.

6409356242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17725.

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 6409356242 is about 80058.4551562169. The cubic root of 6409356242 is about 1857.5398393409.

The spelling of 6409356242 in words is "six billion, four hundred nine million, three hundred fifty-six thousand, two hundred forty-two".