1421516479 has 2 divisors, whose sum is σ = 1421516480. Its totient is φ = 1421516478.

The previous prime is 1421516423. The next prime is 1421516531. The reversal of 1421516479 is 9746151241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421516479 - 2⁷ = 1421516351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421516879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710758239 + 710758240.

It is an arithmetic number, because the mean of its divisors is an integer number (710758240).

Almost surely, 2^1421516479 is an apocalyptic number.

1421516479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421516479 is an equidigital number, since it uses as much as digits as its factorization.

1421516479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 1421516479 is about 37703.0035806168. The cubic root of 1421516479 is about 1124.3908416399.

The spelling of 1421516479 in words is "one billion, four hundred twenty-one million, five hundred sixteen thousand, four hundred seventy-nine".