1421615023 has 2 divisors, whose sum is σ = 1421615024. Its totient is φ = 1421615022.

The previous prime is 1421615009. The next prime is 1421615029. The reversal of 1421615023 is 3205161241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421615023 - 2⁵ = 1421614991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421615029) by changing a digit.

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 as a sum of consecutive naturals, namely, 710807511 + 710807512.

It is an arithmetic number, because the mean of its divisors is an integer number (710807512).

Almost surely, 2^1421615023 is an apocalyptic number.

1421615023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421615023 is an equidigital number, since it uses as much as digits as its factorization.

1421615023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1421615023 is about 37704.3104034539. The cubic root of 1421615023 is about 1124.4168231445.

Adding to 1421615023 its reverse (3205161241), we get a palindrome (4626776264).

The spelling of 1421615023 in words is "one billion, four hundred twenty-one million, six hundred fifteen thousand, twenty-three".