1243121046 has 16 divisors (see below), whose sum is σ = 2516197824. Its totient is φ = 409381064.

The previous prime is 1243121041. The next prime is 1243121051. The reversal of 1243121046 is 6401213421.

It is an interprime number because it is at equal distance from previous prime (1243121041) and next prime (1243121051).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243121041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247616 + ... + 1248611.

It is an arithmetic number, because the mean of its divisors is an integer number (157262364).

Almost surely, 2^1243121046 is an apocalyptic number.

1243121046 is an abundant number, since it is smaller than the sum of its proper divisors (1273076778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243121046 is a wasteful number, since it uses less digits than its factorization.

1243121046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496315.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1243121046 is about 35257.9217481689. The cubic root of 1243121046 is about 1075.2376747960.

Adding to 1243121046 its reverse (6401213421), we get a palindrome (7644334467).

The spelling of 1243121046 in words is "one billion, two hundred forty-three million, one hundred twenty-one thousand, forty-six".