1213213142 has 8 divisors (see below), whose sum is σ = 1854156096. Its totient is φ = 595161112.

The previous prime is 1213213129. The next prime is 1213213147. The reversal of 1213213142 is 2413123121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1213213142² = 2943772255843024328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213213147) 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, 5722598 + ... + 5722809.

It is an arithmetic number, because the mean of its divisors is an integer number (231769512).

Almost surely, 2^1213213142 is an apocalyptic number.

1213213142 is a deficient number, since it is larger than the sum of its proper divisors (640942954).

1213213142 is a wasteful number, since it uses less digits than its factorization.

1213213142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11445462.

The product of its digits is 288, while the sum is 20.

The square root of 1213213142 is about 34831.2093100426. The cubic root of 1213213142 is about 1066.5446348459.

Adding to 1213213142 its reverse (2413123121), we get a palindrome (3626336263).

The spelling of 1213213142 in words is "one billion, two hundred thirteen million, two hundred thirteen thousand, one hundred forty-two".