1243213342 has 64 divisors (see below), whose sum is σ = 2271919104. Its totient is φ = 498769920.

The previous prime is 1243213331. The next prime is 1243213369. The reversal of 1243213342 is 2433123421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4837278 + ... + 4837534.

It is an arithmetic number, because the mean of its divisors is an integer number (35498736).

Almost surely, 2^1243213342 is an apocalyptic number.

1243213342 is a deficient number, since it is larger than the sum of its proper divisors (1028705762).

1243213342 is a wasteful number, since it uses less digits than its factorization.

1243213342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553.

The product of its digits is 3456, while the sum is 25.

The square root of 1243213342 is about 35259.2305928533. The cubic root of 1243213342 is about 1075.2642846157.

Adding to 1243213342 its reverse (2433123421), we get a palindrome (3676336763).

The spelling of 1243213342 in words is "one billion, two hundred forty-three million, two hundred thirteen thousand, three hundred forty-two".