1401403434420 has 96 divisors (see below), whose sum is σ = 4334836101120. Its totient is φ = 335433720960.

The previous prime is 1401403434407. The next prime is 1401403434427. The reversal of 1401403434420 is 244343041041.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401403434427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13386712 + ... + 13490991.

It is an arithmetic number, because the mean of its divisors is an integer number (45154542720).

Almost surely, 2^{1401403434420} is an apocalyptic number.

1401403434420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401403434420 is an abundant number, since it is smaller than the sum of its proper divisors (2933432666700).

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

1401403434420 is a wasteful number, since it uses less digits than its factorization.

1401403434420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26877805 (or 26877803 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 1401403434420 its reverse (244343041041), we get a palindrome (1645746475461).

The spelling of 1401403434420 in words is "one trillion, four hundred one billion, four hundred three million, four hundred thirty-four thousand, four hundred twenty".