1230421 has 8 divisors (see below), whose sum is σ = 1337600. Its totient is φ = 1127520.

The previous prime is 1230401. The next prime is 1230433. The reversal of 1230421 is 1240321.

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 1230421 - 2¹¹ = 1228373 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230401) 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, 456 + ... + 1633.

It is an arithmetic number, because the mean of its divisors is an integer number (167200).

2^1230421 is an apocalyptic number.

It is an amenable number.

1230421 is a deficient number, since it is larger than the sum of its proper divisors (107179).

1230421 is a wasteful number, since it uses less digits than its factorization.

1230421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1230421 is about 1109.2434358607. The cubic root of 1230421 is about 107.1563498775.

Adding to 1230421 its reverse (1240321), we get a palindrome (2470742).

The spelling of 1230421 in words is "one million, two hundred thirty thousand, four hundred twenty-one".