258740421 has 8 divisors (see below), whose sum is σ = 345262080. Its totient is φ = 172356192.

The previous prime is 258740393. The next prime is 258740473. The reversal of 258740421 is 124047852.

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

It is a de Polignac number, because none of the positive numbers 2^k-258740421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258740491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29880 + ... + 37553.

It is an arithmetic number, because the mean of its divisors is an integer number (43157760).

Almost surely, 2^258740421 is an apocalyptic number.

It is an amenable number.

258740421 is a deficient number, since it is larger than the sum of its proper divisors (86521659).

258740421 is a wasteful number, since it uses less digits than its factorization.

258740421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68715.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 258740421 is about 16085.4101906044. The cubic root of 258740421 is about 637.2180855774.

The spelling of 258740421 in words is "two hundred fifty-eight million, seven hundred forty thousand, four hundred twenty-one".