42730213025 has 12 divisors (see below), whose sum is σ = 53278207164. Its totient is φ = 33995304000.

The previous prime is 42730212983. The next prime is 42730213033. The reversal of 42730213025 is 52031203724.

It can be written as a sum of positive squares in 6 ways, for example, as 665433616 + 42064779409 = 25796^2 + 205097^2 .

It is not a de Polignac number, because 42730213025 - 2⁶ = 42730212961 is a prime.

It is a super-2 number, since 2×42730213025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4717046 + ... + 4726095.

It is an arithmetic number, because the mean of its divisors is an integer number (4439850597).

Almost surely, 2^42730213025 is an apocalyptic number.

It is an amenable number.

42730213025 is a deficient number, since it is larger than the sum of its proper divisors (10547994139).

42730213025 is a wasteful number, since it uses less digits than its factorization.

42730213025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9443332 (or 9443327 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

Adding to 42730213025 its reverse (52031203724), we get a palindrome (94761416749).

The spelling of 42730213025 in words is "forty-two billion, seven hundred thirty million, two hundred thirteen thousand, twenty-five".