4251406 has 4 divisors (see below), whose sum is σ = 6377112. Its totient is φ = 2125702.

The previous prime is 4251397. The next prime is 4251407. The reversal of 4251406 is 6041524.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062850 + ... + 1062853.

It is an arithmetic number, because the mean of its divisors is an integer number (1594278).

Almost surely, 2^4251406 is an apocalyptic number.

4251406 is a deficient number, since it is larger than the sum of its proper divisors (2125706).

4251406 is a wasteful number, since it uses less digits than its factorization.

4251406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125705.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4251406 is about 2061.8937896992. The cubic root of 4251406 is about 161.9984504246.

The spelling of 4251406 in words is "four million, two hundred fifty-one thousand, four hundred six".