1043415240521 has 2 divisors, whose sum is σ = 1043415240522. Its totient is φ = 1043415240520.

The previous prime is 1043415240503. The next prime is 1043415240523. The reversal of 1043415240521 is 1250425143401.

1043415240521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 886469325625 + 156945914896 = 941525^2 + 396164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043415240521 - 2²² = 1043411046217 is a prime.

Together with 1043415240523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1043415240523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521707620260 + 521707620261.

It is an arithmetic number, because the mean of its divisors is an integer number (521707620261).

Almost surely, 2^{1043415240521} is an apocalyptic number.

It is an amenable number.

1043415240521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043415240521 is an equidigital number, since it uses as much as digits as its factorization.

1043415240521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 1043415240521 in words is "one trillion, forty-three billion, four hundred fifteen million, two hundred forty thousand, five hundred twenty-one".