1435134221 has 4 divisors (see below), whose sum is σ = 1448300700. Its totient is φ = 1421967744.

The previous prime is 1435134187. The next prime is 1435134241. The reversal of 1435134221 is 1224315341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1224315341 = 739 ⋅1656719.

It can be written as a sum of positive squares in 2 ways, for example, as 823116100 + 612018121 = 28690^2 + 24739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1435134221 is a prime.

It is a super-2 number, since 2×1435134221² = 4119220464570553682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1435134241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6583076 + ... + 6583293.

It is an arithmetic number, because the mean of its divisors is an integer number (362075175).

Almost surely, 2^1435134221 is an apocalyptic number.

It is an amenable number.

1435134221 is a deficient number, since it is larger than the sum of its proper divisors (13166479).

1435134221 is a wasteful number, since it uses less digits than its factorization.

1435134221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13166478.

The product of its digits is 2880, while the sum is 26.

The square root of 1435134221 is about 37883.1654036460. The cubic root of 1435134221 is about 1127.9698900992.

Adding to 1435134221 its reverse (1224315341), we get a palindrome (2659449562).

The spelling of 1435134221 in words is "one billion, four hundred thirty-five million, one hundred thirty-four thousand, two hundred twenty-one".