1403413251421 has 2 divisors, whose sum is σ = 1403413251422. Its totient is φ = 1403413251420.

The previous prime is 1403413251389. The next prime is 1403413251451. The reversal of 1403413251421 is 1241523143041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1322819719321 + 80593532100 = 1150139^2 + 283890^2 .

It is an emirp because it is prime and its reverse (1241523143041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1403413251421 - 2⁵ = 1403413251389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1403413251451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701706625710 + 701706625711.

It is an arithmetic number, because the mean of its divisors is an integer number (701706625711).

Almost surely, 2^{1403413251421} is an apocalyptic number.

It is an amenable number.

1403413251421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1403413251421 is an equidigital number, since it uses as much as digits as its factorization.

1403413251421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 1403413251421 its reverse (1241523143041), we get a palindrome (2644936394462).

The spelling of 1403413251421 in words is "one trillion, four hundred three billion, four hundred thirteen million, two hundred fifty-one thousand, four hundred twenty-one".