5126421 has 4 divisors (see below), whose sum is σ = 6835232. Its totient is φ = 3417612.

The previous prime is 5126419. The next prime is 5126437. The reversal of 5126421 is 1246215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5126421 - 2¹ = 5126419 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5126411) 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 in 3 ways as a sum of consecutive naturals, for example, 854401 + ... + 854406.

It is an arithmetic number, because the mean of its divisors is an integer number (1708808).

Almost surely, 2^5126421 is an apocalyptic number.

It is an amenable number.

5126421 is a deficient number, since it is larger than the sum of its proper divisors (1708811).

5126421 is a wasteful number, since it uses less digits than its factorization.

5126421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708810.

The product of its digits is 480, while the sum is 21.

The square root of 5126421 is about 2264.1601091796. The cubic root of 5126421 is about 172.4267952351.

The spelling of 5126421 in words is "five million, one hundred twenty-six thousand, four hundred twenty-one".