1243112146 has 16 divisors (see below), whose sum is σ = 1872571680. Its totient is φ = 618927840.

The previous prime is 1243112137. The next prime is 1243112147. The reversal of 1243112146 is 6412113421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243112146.

It is not an unprimeable number, because it can be changed into a prime (1243112147) 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, 642801 + ... + 644731.

It is an arithmetic number, because the mean of its divisors is an integer number (117035730).

Almost surely, 2^1243112146 is an apocalyptic number.

1243112146 is a deficient number, since it is larger than the sum of its proper divisors (629459534).

1243112146 is a wasteful number, since it uses less digits than its factorization.

1243112146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129.

The product of its digits is 1152, while the sum is 25.

The square root of 1243112146 is about 35257.7955351721. The cubic root of 1243112146 is about 1075.2351087713.

Adding to 1243112146 its reverse (6412113421), we get a palindrome (7655225567).

The spelling of 1243112146 in words is "one billion, two hundred forty-three million, one hundred twelve thousand, one hundred forty-six".