42521454407 has 2 divisors, whose sum is σ = 42521454408. Its totient is φ = 42521454406.

The previous prime is 42521454383. The next prime is 42521454413. The reversal of 42521454407 is 70445412524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42521454407 - 2¹⁰ = 42521453383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42521454427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21260727203 + 21260727204.

It is an arithmetic number, because the mean of its divisors is an integer number (21260727204).

Almost surely, 2^42521454407 is an apocalyptic number.

42521454407 is a deficient number, since it is larger than the sum of its proper divisors (1).

42521454407 is an equidigital number, since it uses as much as digits as its factorization.

42521454407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179200, while the sum is 38.

The spelling of 42521454407 in words is "forty-two billion, five hundred twenty-one million, four hundred fifty-four thousand, four hundred seven".