1421069 has 4 divisors (see below), whose sum is σ = 1530396. Its totient is φ = 1311744.

The previous prime is 1421041. The next prime is 1421083. The reversal of 1421069 is 9601241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126025 + 1295044 = 355^2 + 1138^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421069 - 2¹⁶ = 1355533 is a prime.

It is a super-2 number, since 2×1421069² = 4038874205522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421039) 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, 54644 + ... + 54669.

It is an arithmetic number, because the mean of its divisors is an integer number (382599).

2^1421069 is an apocalyptic number.

It is an amenable number.

1421069 is a deficient number, since it is larger than the sum of its proper divisors (109327).

1421069 is a wasteful number, since it uses less digits than its factorization.

1421069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109326.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1421069 is about 1192.0859868315. The cubic root of 1421069 is about 112.4272846972.

The spelling of 1421069 in words is "one million, four hundred twenty-one thousand, sixty-nine".