2656042406 has 8 divisors (see below), whose sum is σ = 3986381064. Its totient is φ = 1327248720.

The previous prime is 2656042393. The next prime is 2656042409. The reversal of 2656042406 is 6042406562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2656042406² = 14109122524940537672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656042409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381935 + ... + 388826.

It is an arithmetic number, because the mean of its divisors is an integer number (498297633).

Almost surely, 2^2656042406 is an apocalyptic number.

2656042406 is a deficient number, since it is larger than the sum of its proper divisors (1330338658).

2656042406 is a wasteful number, since it uses less digits than its factorization.

2656042406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772486.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 2656042406 is about 51536.8063232482. The cubic root of 2656042406 is about 1384.8784848231.

Adding to 2656042406 its reverse (6042406562), we get a palindrome (8698448968).

The spelling of 2656042406 in words is "two billion, six hundred fifty-six million, forty-two thousand, four hundred six".