1067421 has 8 divisors (see below), whose sum is σ = 1428480. Its totient is φ = 708992.

The previous prime is 1067411. The next prime is 1067441. The reversal of 1067421 is 1247601.

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

It is a cyclic number.

It is not a de Polignac number, because 1067421 - 2⁷ = 1067293 is a prime.

It is a super-2 number, since 2×1067421² = 2278775182482, which contains 22 as substring.

1067421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1067411) 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, 685 + ... + 1613.

It is an arithmetic number, because the mean of its divisors is an integer number (178560).

2^1067421 is an apocalyptic number.

It is an amenable number.

1067421 is a deficient number, since it is larger than the sum of its proper divisors (361059).

1067421 is an equidigital number, since it uses as much as digits as its factorization.

1067421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1067421 is about 1033.1606845017. The cubic root of 1067421 is about 102.1986708416.

The spelling of 1067421 in words is "one million, sixty-seven thousand, four hundred twenty-one".