1007421 has 4 divisors (see below), whose sum is σ = 1343232. Its totient is φ = 671612.

The previous prime is 1007417. The next prime is 1007429. The reversal of 1007421 is 1247001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1007421 - 2² = 1007417 is a prime.

It is a D-number.

1007421 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1007421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1007429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167901 + ... + 167906.

It is an arithmetic number, because the mean of its divisors is an integer number (335808).

2^1007421 is an apocalyptic number.

It is an amenable number.

1007421 is a deficient number, since it is larger than the sum of its proper divisors (335811).

1007421 is an equidigital number, since it uses as much as digits as its factorization.

1007421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335810.

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

The square root of 1007421 is about 1003.7036415197. The cubic root of 1007421 is about 100.2467572743.

The spelling of 1007421 in words is "one million, seven thousand, four hundred twenty-one".