1243244002 has 64 divisors (see below), whose sum is σ = 2551336704. Its totient is φ = 438647040.

The previous prime is 1243243999. The next prime is 1243244003. The reversal of 1243244002 is 2004423421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1243244003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100248 + ... + 111964.

It is an arithmetic number, because the mean of its divisors is an integer number (39864636).

Almost surely, 2^1243244002 is an apocalyptic number.

1243244002 is an abundant number, since it is smaller than the sum of its proper divisors (1308092702).

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

1243244002 is a wasteful number, since it uses less digits than its factorization.

1243244002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11803.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1243244002 is about 35259.6653699379. The cubic root of 1243244002 is about 1075.2731238956.

Adding to 1243244002 its reverse (2004423421), we get a palindrome (3247667423).

The spelling of 1243244002 in words is "one billion, two hundred forty-three million, two hundred forty-four thousand, two".