1421081 has 8 divisors (see below), whose sum is σ = 1516320. Its totient is φ = 1327168.

The previous prime is 1421041. The next prime is 1421083. The reversal of 1421081 is 1801241.

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 1421081 - 2¹⁰ = 1420057 is a prime.

It is a super-2 number, since 2×1421081² = 4038942417122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421083) 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, 2810 + ... + 3276.

It is an arithmetic number, because the mean of its divisors is an integer number (189540).

2^1421081 is an apocalyptic number.

It is an amenable number.

1421081 is a deficient number, since it is larger than the sum of its proper divisors (95239).

1421081 is a wasteful number, since it uses less digits than its factorization.

1421081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1421081 is about 1192.0910200148. The cubic root of 1421081 is about 112.4276011547.

The spelling of 1421081 in words is "one million, four hundred twenty-one thousand, eighty-one".