1243221134 has 8 divisors (see below), whose sum is σ = 1877347800. Its totient is φ = 617438536.

The previous prime is 1243221131. The next prime is 1243221137. The reversal of 1243221134 is 4311223421.

It is an interprime number because it is at equal distance from previous prime (1243221131) and next prime (1243221137).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243221131) 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, 2085644 + ... + 2086239.

It is an arithmetic number, because the mean of its divisors is an integer number (234668475).

Almost surely, 2^1243221134 is an apocalyptic number.

1243221134 is a deficient number, since it is larger than the sum of its proper divisors (634126666).

1243221134 is a wasteful number, since it uses less digits than its factorization.

1243221134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172034.

The product of its digits is 1152, while the sum is 23.

The square root of 1243221134 is about 35259.3410885683. The cubic root of 1243221134 is about 1075.2665310635.

Adding to 1243221134 its reverse (4311223421), we get a palindrome (5554444555).

The spelling of 1243221134 in words is "one billion, two hundred forty-three million, two hundred twenty-one thousand, one hundred thirty-four".