4202640391 has 8 divisors (see below), whose sum is σ = 4254541200. Its totient is φ = 4150973568.

The previous prime is 4202640373. The next prime is 4202640451. The reversal of 4202640391 is 1930462024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4202640391 - 2⁷ = 4202640263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4202640331) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22216 + ... + 94333.

It is an arithmetic number, because the mean of its divisors is an integer number (531817650).

Almost surely, 2^4202640391 is an apocalyptic number.

4202640391 is a deficient number, since it is larger than the sum of its proper divisors (51900809).

4202640391 is a wasteful number, since it uses less digits than its factorization.

4202640391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116993.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 4202640391 is about 64827.7748422696. The cubic root of 4202640391 is about 1613.7666769822.

The spelling of 4202640391 in words is "four billion, two hundred two million, six hundred forty thousand, three hundred ninety-one".