1402002421441 has 4 divisors (see below), whose sum is σ = 1484473152132. Its totient is φ = 1319531690752.

The previous prime is 1402002421439. The next prime is 1402002421447. The reversal of 1402002421441 is 1441242002041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 650287411216 + 751715010225 = 806404^2 + 867015^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402002421441 - 2¹ = 1402002421439 is a prime.

It is a super-2 number, since 2×1402002421441² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402002421447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41235365320 + ... + 41235365353.

It is an arithmetic number, because the mean of its divisors is an integer number (371118288033).

Almost surely, 2^{1402002421441} is an apocalyptic number.

It is an amenable number.

1402002421441 is a deficient number, since it is larger than the sum of its proper divisors (82470730691).

1402002421441 is an equidigital number, since it uses as much as digits as its factorization.

1402002421441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82470730690.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 1402002421441 its reverse (1441242002041), we get a palindrome (2843244423482).

The spelling of 1402002421441 in words is "one trillion, four hundred two billion, two million, four hundred twenty-one thousand, four hundred forty-one".