1421036641 has 2 divisors, whose sum is σ = 1421036642. Its totient is φ = 1421036640.

The previous prime is 1421036599. The next prime is 1421036677. The reversal of 1421036641 is 1466301241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1306461025 + 114575616 = 36145^2 + 10704^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421036641 - 2¹⁵ = 1421003873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421036741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710518320 + 710518321.

It is an arithmetic number, because the mean of its divisors is an integer number (710518321).

Almost surely, 2^1421036641 is an apocalyptic number.

It is an amenable number.

1421036641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421036641 is an equidigital number, since it uses as much as digits as its factorization.

1421036641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1421036641 is about 37696.6396513005. The cubic root of 1421036641 is about 1124.2643133447.

Adding to 1421036641 its reverse (1466301241), we get a palindrome (2887337882).

The spelling of 1421036641 in words is "one billion, four hundred twenty-one million, thirty-six thousand, six hundred forty-one".