10421407 has 4 divisors (see below), whose sum is σ = 10564240. Its totient is φ = 10278576.

The previous prime is 10421401. The next prime is 10421413. The reversal of 10421407 is 70412401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70412401 = 1181 ⋅59621.

It is an interprime number because it is at equal distance from previous prime (10421401) and next prime (10421413).

It is a cyclic number.

It is not a de Polignac number, because 10421407 - 2²³ = 2032799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421401) 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 3 ways as a sum of consecutive naturals, for example, 71307 + ... + 71452.

It is an arithmetic number, because the mean of its divisors is an integer number (2641060).

Almost surely, 2^10421407 is an apocalyptic number.

10421407 is a deficient number, since it is larger than the sum of its proper divisors (142833).

10421407 is an equidigital number, since it uses as much as digits as its factorization.

10421407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142832.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 10421407 is about 3228.2204075930. The cubic root of 10421407 is about 218.4282396608.

Adding to 10421407 its reverse (70412401), we get a palindrome (80833808).

The spelling of 10421407 in words is "ten million, four hundred twenty-one thousand, four hundred seven".