1242045412 has 12 divisors (see below), whose sum is σ = 2174135040. Its totient is φ = 620863976.

The previous prime is 1242045401. The next prime is 1242045419. The reversal of 1242045412 is 2145402421.

It is not an unprimeable number, because it can be changed into a prime (1242045419) 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, 21112 + ... + 54127.

It is an arithmetic number, because the mean of its divisors is an integer number (181177920).

Almost surely, 2^1242045412 is an apocalyptic number.

It is an amenable number.

1242045412 is a deficient number, since it is larger than the sum of its proper divisors (932089628).

1242045412 is a wasteful number, since it uses less digits than its factorization.

1242045412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79370 (or 79368 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1242045412 is about 35242.6646552158. The cubic root of 1242045412 is about 1074.9274620606.

Adding to 1242045412 its reverse (2145402421), we get a palindrome (3387447833).

The spelling of 1242045412 in words is "one billion, two hundred forty-two million, forty-five thousand, four hundred twelve".