420241040 has 20 divisors (see below), whose sum is σ = 977060604. Its totient is φ = 168096384.

The previous prime is 420241039. The next prime is 420241043. The reversal of 420241040 is 40142024.

It can be written as a sum of positive squares in 2 ways, for example, as 271986064 + 148254976 = 16492^2 + 12176^2 .

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

It is not an unprimeable number, because it can be changed into a prime (420241043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2626427 + ... + 2626586.

Almost surely, 2^420241040 is an apocalyptic number.

420241040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420241040 is an abundant number, since it is smaller than the sum of its proper divisors (556819564).

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

420241040 is a wasteful number, since it uses less digits than its factorization.

420241040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253026 (or 5253020 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 420241040 is about 20499.7814622498. The cubic root of 420241040 is about 749.0304746416.

Adding to 420241040 its reverse (40142024), we get a palindrome (460383064).

The spelling of 420241040 in words is "four hundred twenty million, two hundred forty-one thousand, forty".