1243941846 has 16 divisors (see below), whose sum is σ = 2843295744. Its totient is φ = 355411944.

The previous prime is 1243941841. The next prime is 1243941851. The reversal of 1243941846 is 6481493421.

It is an interprime number because it is at equal distance from previous prime (1243941841) and next prime (1243941851).

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 29617663 = 1243941846 / (1 + 2 + 4 + 3 + 9 + 4 + 1 + 8 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 1243941798 and 1243941807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243941841) 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, 14808790 + ... + 14808873.

It is an arithmetic number, because the mean of its divisors is an integer number (177705984).

Almost surely, 2^1243941846 is an apocalyptic number.

1243941846 is an abundant number, since it is smaller than the sum of its proper divisors (1599353898).

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

1243941846 is a wasteful number, since it uses less digits than its factorization.

1243941846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29617675.

The product of its digits is 165888, while the sum is 42.

The square root of 1243941846 is about 35269.5597647603. The cubic root of 1243941846 is about 1075.4742730782.

It can be divided in two parts, 12439 and 41846, that added together give a triangular number (54285 = T₃₂₉).

The spelling of 1243941846 in words is "one billion, two hundred forty-three million, nine hundred forty-one thousand, eight hundred forty-six".