1234400121320 has 32 divisors (see below), whose sum is σ = 2777431938120. Its totient is φ = 493754419200.

The previous prime is 1234400121307. The next prime is 1234400121337. The reversal of 1234400121320 is 231210044321.

It can be written as a sum of positive squares in 4 ways, for example, as 1068051973156 + 166348148164 = 1033466^2 + 407858^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6571424 + ... + 6756656.

Almost surely, 2^{1234400121320} is an apocalyptic number.

1234400121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234400121320 is an abundant number, since it is smaller than the sum of its proper divisors (1543031816800).

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

1234400121320 is a wasteful number, since it uses less digits than its factorization.

1234400121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351845 (or 351841 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1234400121320 its reverse (231210044321), we get a palindrome (1465610165641).

The spelling of 1234400121320 in words is "one trillion, two hundred thirty-four billion, four hundred million, one hundred twenty-one thousand, three hundred twenty".