1233120040 has 16 divisors (see below), whose sum is σ = 2774520180. Its totient is φ = 493248000.

The previous prime is 1233120019. The next prime is 1233120043. The reversal of 1233120040 is 400213321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1125334116 + 107785924 = 33546^2 + 10382^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1233119996 and 1233120023.

It is not an unprimeable number, because it can be changed into a prime (1233120043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15413961 + ... + 15414040.

Almost surely, 2^1233120040 is an apocalyptic number.

1233120040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1233120040 is an abundant number, since it is smaller than the sum of its proper divisors (1541400140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1233120040 is a wasteful number, since it uses less digits than its factorization.

1233120040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30828012 (or 30828008 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1233120040 is about 35115.8089754458. The cubic root of 1233120040 is about 1072.3464504520.

Adding to 1233120040 its reverse (400213321), we get a palindrome (1633333361).

The spelling of 1233120040 in words is "one billion, two hundred thirty-three million, one hundred twenty thousand, forty".