1401434203421 has 24 divisors (see below), whose sum is σ = 1648384783416. Its totient is φ = 1187879454720.

The previous prime is 1401434203417. The next prime is 1401434203439. The reversal of 1401434203421 is 1243024341041.

It can be written as a sum of positive squares in 4 ways, for example, as 691535275396 + 709898928025 = 831586^2 + 842555^2 .

It is not a de Polignac number, because 1401434203421 - 2² = 1401434203417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401434203021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5760281 + ... + 5998641.

It is an arithmetic number, because the mean of its divisors is an integer number (68682699309).

Almost surely, 2^{1401434203421} is an apocalyptic number.

It is an amenable number.

1401434203421 is a deficient number, since it is larger than the sum of its proper divisors (246950579995).

1401434203421 is a wasteful number, since it uses less digits than its factorization.

1401434203421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239709 (or 239702 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 1401434203421 its reverse (1243024341041), we get a palindrome (2644458544462).

The spelling of 1401434203421 in words is "one trillion, four hundred one billion, four hundred thirty-four million, two hundred three thousand, four hundred twenty-one".