1220413123 has 8 divisors (see below), whose sum is σ = 1234796400. Its totient is φ = 1206044928.

The previous prime is 1220413099. The next prime is 1220413141. The reversal of 1220413123 is 3213140221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1220413123 - 2⁵ = 1220413091 is a prime.

It is a super-2 number, since 2×1220413123² = 2978816381581226258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220413123.

It is not an unprimeable number, because it can be changed into a prime (1220413193) 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, 292788 + ... + 296926.

It is an arithmetic number, because the mean of its divisors is an integer number (154349550).

Almost surely, 2^1220413123 is an apocalyptic number.

1220413123 is a deficient number, since it is larger than the sum of its proper divisors (14383277).

1220413123 is an equidigital number, since it uses as much as digits as its factorization.

1220413123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7541.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1220413123 is about 34934.4117311284. The cubic root of 1220413123 is about 1068.6503269768.

Adding to 1220413123 its reverse (3213140221), we get a palindrome (4433553344).

The spelling of 1220413123 in words is "one billion, two hundred twenty million, four hundred thirteen thousand, one hundred twenty-three".