1235424221 has 8 divisors (see below), whose sum is σ = 1313573760. Its totient is φ = 1157883328.

The previous prime is 1235424217. The next prime is 1235424257. The reversal of 1235424221 is 1224245321.

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

It is not a de Polignac number, because 1235424221 - 2² = 1235424217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235324221) 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, 147971 + ... + 156096.

It is an arithmetic number, because the mean of its divisors is an integer number (164196720).

Almost surely, 2^1235424221 is an apocalyptic number.

It is an amenable number.

1235424221 is a deficient number, since it is larger than the sum of its proper divisors (78149539).

1235424221 is a wasteful number, since it uses less digits than its factorization.

1235424221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304323.

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

The square root of 1235424221 is about 35148.6019778881. The cubic root of 1235424221 is about 1073.0139558641.

Adding to 1235424221 its reverse (1224245321), we get a palindrome (2459669542).

The spelling of 1235424221 in words is "one billion, two hundred thirty-five million, four hundred twenty-four thousand, two hundred twenty-one".