10421439 has 8 divisors (see below), whose sum is σ = 15880320. Its totient is φ = 5955096.

The previous prime is 10421429. The next prime is 10421441. The reversal of 10421439 is 93412401.

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

It is not a de Polignac number, because 10421439 - 2⁷ = 10421311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248109 + ... + 248150.

It is an arithmetic number, because the mean of its divisors is an integer number (1985040).

Almost surely, 2^10421439 is an apocalyptic number.

10421439 is a deficient number, since it is larger than the sum of its proper divisors (5458881).

10421439 is an equidigital number, since it uses as much as digits as its factorization.

10421439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496269.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 10421439 is about 3228.2253638803. The cubic root of 10421439 is about 218.4284632294.

The spelling of 10421439 in words is "ten million, four hundred twenty-one thousand, four hundred thirty-nine".