1422235421 has 8 divisors (see below), whose sum is σ = 1443910200. Its totient is φ = 1400620032.

The previous prime is 1422235417. The next prime is 1422235471. The reversal of 1422235421 is 1245322241.

It can be written as a sum of positive squares in 4 ways, for example, as 576240025 + 845995396 = 24005^2 + 29086^2 .

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 1422235421 - 2² = 1422235417 is a prime.

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 (1422235411) 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, 34655 + ... + 63603.

It is an arithmetic number, because the mean of its divisors is an integer number (180488775).

Almost surely, 2^1422235421 is an apocalyptic number.

It is an amenable number.

1422235421 is a deficient number, since it is larger than the sum of its proper divisors (21674779).

1422235421 is an equidigital number, since it uses as much as digits as its factorization.

1422235421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29695.

The product of its digits is 3840, while the sum is 26.

The square root of 1422235421 is about 37712.5366556003. The cubic root of 1422235421 is about 1124.5803658958.

Adding to 1422235421 its reverse (1245322241), we get a palindrome (2667557662).

The spelling of 1422235421 in words is "one billion, four hundred twenty-two million, two hundred thirty-five thousand, four hundred twenty-one".