1220253242 has 16 divisors (see below), whose sum is σ = 2039151240. Its totient is φ = 543772992.

The previous prime is 1220253239. The next prime is 1220253253. The reversal of 1220253242 is 2423520221.

It can be written as a sum of positive squares in 4 ways, for example, as 737176801 + 483076441 = 27151^2 + 21979^2 .

It is a super-2 number, since 2×1220253242² = 2978035949223021128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808433 + ... + 809940.

Almost surely, 2^1220253242 is an apocalyptic number.

1220253242 is a deficient number, since it is larger than the sum of its proper divisors (818897998).

1220253242 is a wasteful number, since it uses less digits than its factorization.

1220253242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618417.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1220253242 is about 34932.1233537270. The cubic root of 1220253242 is about 1068.6036585328.

Adding to 1220253242 its reverse (2423520221), we get a palindrome (3643773463).

The spelling of 1220253242 in words is "one billion, two hundred twenty million, two hundred fifty-three thousand, two hundred forty-two".