42424420240 has 20 divisors (see below), whose sum is σ = 98636777244. Its totient is φ = 16969768064.

The previous prime is 42424420177. The next prime is 42424420273. The reversal of 42424420240 is 4202442424.

It can be written as a sum of positive squares in 2 ways, for example, as 7528685824 + 34895734416 = 86768^2 + 186804^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 42424420199 and 42424420208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265152547 + ... + 265152706.

Almost surely, 2^42424420240 is an apocalyptic number.

42424420240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42424420240 is an abundant number, since it is smaller than the sum of its proper divisors (56212357004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42424420240 is a wasteful number, since it uses less digits than its factorization.

42424420240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530305266 (or 530305260 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 42424420240 its reverse (4202442424), we get a palindrome (46626862664).

The spelling of 42424420240 in words is "forty-two billion, four hundred twenty-four million, four hundred twenty thousand, two hundred forty".