1220534435 has 4 divisors (see below), whose sum is σ = 1464641328. Its totient is φ = 976427544.

The previous prime is 1220534351. The next prime is 1220534443. The reversal of 1220534435 is 5344350221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220534435 - 2²⁰ = 1219485859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220534398 and 1220534407.

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, 122053439 + ... + 122053448.

It is an arithmetic number, because the mean of its divisors is an integer number (366160332).

Almost surely, 2^1220534435 is an apocalyptic number.

1220534435 is a deficient number, since it is larger than the sum of its proper divisors (244106893).

1220534435 is an equidigital number, since it uses as much as digits as its factorization.

1220534435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244106892.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1220534435 is about 34936.1479702614. The cubic root of 1220534435 is about 1068.6857346079.

Adding to 1220534435 its reverse (5344350221), we get a palindrome (6564884656).

The spelling of 1220534435 in words is "one billion, two hundred twenty million, five hundred thirty-four thousand, four hundred thirty-five".