1223720104 has 8 divisors (see below), whose sum is σ = 2294475210. Its totient is φ = 611860048.

The previous prime is 1223720089. The next prime is 1223720117. The reversal of 1223720104 is 4010273221.

It can be written as a sum of positive squares in only one way, i.e., 992376004 + 231344100 = 31502^2 + 15210^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76482499 + ... + 76482514.

Almost surely, 2^1223720104 is an apocalyptic number.

It is an amenable number.

1223720104 is a deficient number, since it is larger than the sum of its proper divisors (1070755106).

1223720104 is a wasteful number, since it uses less digits than its factorization.

1223720104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152965019 (or 152965015 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1223720104 is about 34981.7109930318. The cubic root of 1223720104 is about 1069.6147050763.

Adding to 1223720104 its reverse (4010273221), we get a palindrome (5233993325).

The spelling of 1223720104 in words is "one billion, two hundred twenty-three million, seven hundred twenty thousand, one hundred four".