1213342342 has 4 divisors (see below), whose sum is σ = 1820013516. Its totient is φ = 606671170.

The previous prime is 1213342307. The next prime is 1213342373. The reversal of 1213342342 is 2432433121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2432433121 = 4793 ⋅507497.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303335584 + ... + 303335587.

It is an arithmetic number, because the mean of its divisors is an integer number (455003379).

Almost surely, 2^1213342342 is an apocalyptic number.

1213342342 is a deficient number, since it is larger than the sum of its proper divisors (606671174).

1213342342 is an equidigital number, since it uses as much as digits as its factorization.

1213342342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606671173.

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

The square root of 1213342342 is about 34833.0639192133. The cubic root of 1213342342 is about 1066.5824937268.

Adding to 1213342342 its reverse (2432433121), we get a palindrome (3645775463).

The spelling of 1213342342 in words is "one billion, two hundred thirteen million, three hundred forty-two thousand, three hundred forty-two".