1227421 has 8 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 1125552.

The previous prime is 1227407. The next prime is 1227431. The reversal of 1227421 is 1247221.

It is a happy number.

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 1227421 - 2¹¹ = 1225373 is a prime.

It is a super-2 number, since 2×1227421² = 3013124622482, which contains 22 as substring.

It is a Duffinian number.

1227421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227431) 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, 3240 + ... + 3598.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2^1227421 is an apocalyptic number.

It is an amenable number.

1227421 is a deficient number, since it is larger than the sum of its proper divisors (103139).

1227421 is a wasteful number, since it uses less digits than its factorization.

1227421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635.

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

The square root of 1227421 is about 1107.8903375335. The cubic root of 1227421 is about 107.0691898264.

The spelling of 1227421 in words is "one million, two hundred twenty-seven thousand, four hundred twenty-one".