15713421 has 8 divisors (see below), whose sum is σ = 20974560. Its totient is φ = 10463952.

The previous prime is 15713413. The next prime is 15713429. The reversal of 15713421 is 12431751.

It is an interprime number because it is at equal distance from previous prime (15713413) and next prime (15713429).

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

It is not a de Polignac number, because 15713421 - 2³ = 15713413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15713391 and 15713400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15713429) 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, 966 + ... + 5688.

It is an arithmetic number, because the mean of its divisors is an integer number (2621820).

Almost surely, 2^15713421 is an apocalyptic number.

It is an amenable number.

15713421 is a deficient number, since it is larger than the sum of its proper divisors (5261139).

15713421 is a wasteful number, since it uses less digits than its factorization.

15713421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5835.

The product of its digits is 840, while the sum is 24.

The square root of 15713421 is about 3964.0157668708. The cubic root of 15713421 is about 250.4706919070.

The spelling of 15713421 in words is "fifteen million, seven hundred thirteen thousand, four hundred twenty-one".