42419933521 has 9 divisors (see below), whose sum is σ = 49347314121. Its totient is φ = 36358707252.

The previous prime is 42419933513. The next prime is 42419933557. The reversal of 42419933521 is 12533991424.

The square root of 42419933521 is 205961.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 42419933521 - 2³ = 42419933513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42419933021) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1427016 + ... + 1456438.

Almost surely, 2^42419933521 is an apocalyptic number.

42419933521 is the 205961-st square number.

42419933521 is the 102981-st centered octagonal number.

It is an amenable number.

42419933521 is a deficient number, since it is larger than the sum of its proper divisors (6927380600).

42419933521 is an frugal number, since it uses more digits than its factorization.

42419933521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58860 (or 29430 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The spelling of 42419933521 in words is "forty-two billion, four hundred nineteen million, nine hundred thirty-three thousand, five hundred twenty-one".