7100421 has 8 divisors (see below), whose sum is σ = 9698304. Its totient is φ = 4618080.

The previous prime is 7100419. The next prime is 7100453. The reversal of 7100421 is 1240017.

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

It is not a de Polignac number, because 7100421 - 2¹ = 7100419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7100421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7100221) 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, 28741 + ... + 28986.

It is an arithmetic number, because the mean of its divisors is an integer number (1212288).

Almost surely, 2^7100421 is an apocalyptic number.

It is an amenable number.

7100421 is a deficient number, since it is larger than the sum of its proper divisors (2597883).

7100421 is a wasteful number, since it uses less digits than its factorization.

7100421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57771.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 7100421 is about 2664.6615169661. The cubic root of 7100421 is about 192.2035330798.

Adding to 7100421 its reverse (1240017), we get a palindrome (8340438).

The spelling of 7100421 in words is "seven million, one hundred thousand, four hundred twenty-one".