2598421 has 12 divisors (see below), whose sum is σ = 3182880. Its totient is φ = 2109240.

The previous prime is 2598403. The next prime is 2598439. The reversal of 2598421 is 1248952.

2598421 = T₂₇₃ + T₂₇₄ + ... + T₃₂₉.

2598421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2598403) and next prime (2598439).

It is not a de Polignac number, because 2598421 - 2⁹ = 2597909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2598121) 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 11 ways as a sum of consecutive naturals, for example, 465 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (265240).

2^2598421 is an apocalyptic number.

2598421 is the 931-st octagonal number.

It is an amenable number.

2598421 is a deficient number, since it is larger than the sum of its proper divisors (584459).

2598421 is a wasteful number, since it uses less digits than its factorization.

2598421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824 (or 2817 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 2598421 is about 1611.9618481838. The cubic root of 2598421 is about 137.4790447404.

The spelling of 2598421 in words is "two million, five hundred ninety-eight thousand, four hundred twenty-one".