1243421004210 has 64 divisors (see below), whose sum is σ = 3720574024704. Its totient is φ = 258373195200.

The previous prime is 1243421004169. The next prime is 1243421004251. The reversal of 1243421004210 is 124001243421.

It is an interprime number because it is at equal distance from previous prime (1243421004169) and next prime (1243421004251).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269136436 + ... + 269141055.

It is an arithmetic number, because the mean of its divisors is an integer number (58133969136).

Almost surely, 2^{1243421004210} is an apocalyptic number.

1243421004210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243421004210 is an abundant number, since it is smaller than the sum of its proper divisors (2477153020494).

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

1243421004210 is a wasteful number, since it uses less digits than its factorization.

1243421004210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538277519.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1243421004210 its reverse (124001243421), we get a palindrome (1367422247631).

The spelling of 1243421004210 in words is "one trillion, two hundred forty-three billion, four hundred twenty-one million, four thousand, two hundred ten".