1221434 has 8 divisors (see below), whose sum is σ = 1928640. Its totient is φ = 578556.

The previous prime is 1221427. The next prime is 1221443. The reversal of 1221434 is 4341221.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16034 + ... + 16109.

It is an arithmetic number, because the mean of its divisors is an integer number (241080).

2^1221434 is an apocalyptic number.

1221434 is a deficient number, since it is larger than the sum of its proper divisors (707206).

1221434 is a wasteful number, since it uses less digits than its factorization.

1221434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32164.

The product of its digits is 192, while the sum is 17.

The square root of 1221434 is about 1105.1850523781. The cubic root of 1221434 is about 106.8948219678.

Adding to 1221434 its reverse (4341221), we get a palindrome (5562655).

The spelling of 1221434 in words is "one million, two hundred twenty-one thousand, four hundred thirty-four".