42453500521 has 2 divisors, whose sum is σ = 42453500522. Its totient is φ = 42453500520.

The previous prime is 42453500503. The next prime is 42453500539. The reversal of 42453500521 is 12500535424.

It is a balanced prime because it is at equal distance from previous prime (42453500503) and next prime (42453500539).

It can be written as a sum of positive squares in only one way, i.e., 41754426921 + 699073600 = 204339^2 + 26440^2 .

It is a cyclic number.

It is not a de Polignac number, because 42453500521 - 2¹¹ = 42453498473 is a prime.

It is not a weakly prime, because it can be changed into another prime (42453500581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21226750260 + 21226750261.

It is an arithmetic number, because the mean of its divisors is an integer number (21226750261).

Almost surely, 2^42453500521 is an apocalyptic number.

It is an amenable number.

42453500521 is a deficient number, since it is larger than the sum of its proper divisors (1).

42453500521 is an equidigital number, since it uses as much as digits as its factorization.

42453500521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 42453500521 in words is "forty-two billion, four hundred fifty-three million, five hundred thousand, five hundred twenty-one".