4240420040 has 32 divisors (see below), whose sum is σ = 9546984000. Its totient is φ = 1695094464.

The previous prime is 4240420021. The next prime is 4240420043. The reversal of 4240420040 is 400240424.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4240419994 and 4240420021.

It is not an unprimeable number, because it can be changed into a prime (4240420043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32021 + ... + 97499.

It is an arithmetic number, because the mean of its divisors is an integer number (298343250).

Almost surely, 2^4240420040 is an apocalyptic number.

4240420040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4240420040 is an abundant number, since it is smaller than the sum of its proper divisors (5306563960).

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

4240420040 is a wasteful number, since it uses less digits than its factorization.

4240420040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67109 (or 67105 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4240420040 is about 65118.5076610329. The cubic root of 4240420040 is about 1618.5879124140.

Adding to 4240420040 its reverse (400240424), we get a palindrome (4640660464).

The spelling of 4240420040 in words is "four billion, two hundred forty million, four hundred twenty thousand, forty".