1220452425242 has 4 divisors (see below), whose sum is σ = 1830678637866. Its totient is φ = 610226212620.

The previous prime is 1220452425169. The next prime is 1220452425251. The reversal of 1220452425242 is 2425242540221.

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

It can be written as a sum of positive squares in only one way, i.e., 1134350673481 + 86101751761 = 1065059^2 + 293431^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305113106309 + ... + 305113106312.

Almost surely, 2^{1220452425242} is an apocalyptic number.

1220452425242 is a deficient number, since it is larger than the sum of its proper divisors (610226212624).

1220452425242 is an equidigital number, since it uses as much as digits as its factorization.

1220452425242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610226212623.

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 1220452425242 its reverse (2425242540221), we get a palindrome (3645694965463).

The spelling of 1220452425242 in words is "one trillion, two hundred twenty billion, four hundred fifty-two million, four hundred twenty-five thousand, two hundred forty-two".