42498239009 has 4 divisors (see below), whose sum is σ = 42888131220. Its totient is φ = 42108346800.

The previous prime is 42498238963. The next prime is 42498239033. The reversal of 42498239009 is 90093289424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26494723984 + 16003515025 = 162772^2 + 126505^2 .

It is a cyclic number.

It is not a de Polignac number, because 42498239009 - 2¹² = 42498234913 is a prime.

It is a super-2 number, since 2×42498239009² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42498239809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194945942 + ... + 194946159.

It is an arithmetic number, because the mean of its divisors is an integer number (10722032805).

Almost surely, 2^42498239009 is an apocalyptic number.

It is an amenable number.

42498239009 is a deficient number, since it is larger than the sum of its proper divisors (389892211).

42498239009 is a wasteful number, since it uses less digits than its factorization.

42498239009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389892210.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 42498239009 in words is "forty-two billion, four hundred ninety-eight million, two hundred thirty-nine thousand, nine".