1421400401 has 2 divisors, whose sum is σ = 1421400402. Its totient is φ = 1421400400.

The previous prime is 1421400353. The next prime is 1421400419. The reversal of 1421400401 is 1040041241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 873793600 + 547606801 = 29560^2 + 23401^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421400401 - 2¹⁰ = 1421399377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421400401.

It is not a weakly prime, because it can be changed into another prime (1421406401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710700200 + 710700201.

It is an arithmetic number, because the mean of its divisors is an integer number (710700201).

Almost surely, 2^1421400401 is an apocalyptic number.

It is an amenable number.

1421400401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421400401 is an equidigital number, since it uses as much as digits as its factorization.

1421400401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1421400401 is about 37701.4641758115. The cubic root of 1421400401 is about 1124.3602356885.

Adding to 1421400401 its reverse (1040041241), we get a palindrome (2461441642).

The spelling of 1421400401 in words is "one billion, four hundred twenty-one million, four hundred thousand, four hundred one".