1402020121408 has 28 divisors (see below), whose sum is σ = 2813393618820. Its totient is φ = 693133540352.

The previous prime is 1402020121379. The next prime is 1402020121421. The reversal of 1402020121408 is 8041210202041.

It can be written as a sum of positive squares in 2 ways, for example, as 765331028224 + 636689093184 = 874832^2 + 797928^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 123064891 + ... + 123076282.

Almost surely, 2^{1402020121408} is an apocalyptic number.

It is an amenable number.

1402020121408 is an abundant number, since it is smaller than the sum of its proper divisors (1411373497412).

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

1402020121408 is an equidigital number, since it uses as much as digits as its factorization.

1402020121408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246141274 (or 246141264 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 1402020121408 its reverse (8041210202041), we get a palindrome (9443230323449).

The spelling of 1402020121408 in words is "one trillion, four hundred two billion, twenty million, one hundred twenty-one thousand, four hundred eight".