6440122 has 8 divisors (see below), whose sum is σ = 10403316. Its totient is φ = 2972352.

The previous prime is 6440113. The next prime is 6440131. The reversal of 6440122 is 2210446.

It is an interprime number because it is at equal distance from previous prime (6440113) and next prime (6440131).

It can be written as a sum of positive squares in 2 ways, for example, as 6355441 + 84681 = 2521^2 + 291^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 6440122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123823 + ... + 123874.

Almost surely, 2^6440122 is an apocalyptic number.

6440122 is a deficient number, since it is larger than the sum of its proper divisors (3963194).

6440122 is a wasteful number, since it uses less digits than its factorization.

6440122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247712.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 6440122 is about 2537.7395453435. The cubic root of 6440122 is about 186.0507242086.

Adding to 6440122 its reverse (2210446), we get a palindrome (8650568).

It can be divided in two parts, 64 and 40122, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 6440122 in words is "six million, four hundred forty thousand, one hundred twenty-two".