420006040 has 32 divisors (see below), whose sum is σ = 945600480. Its totient is φ = 167898112.

The previous prime is 420005987. The next prime is 420006071. The reversal of 420006040 is 40600024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114312 + ... + 117928.

It is an arithmetic number, because the mean of its divisors is an integer number (29550015).

Almost surely, 2^420006040 is an apocalyptic number.

420006040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420006040 is an abundant number, since it is smaller than the sum of its proper divisors (525594440).

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

420006040 is a wasteful number, since it uses less digits than its factorization.

420006040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6531 (or 6527 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 420006040 is about 20494.0488923004. The cubic root of 420006040 is about 748.8908286085.

Adding to 420006040 its reverse (40600024), we get a palindrome (460606064).

The spelling of 420006040 in words is "four hundred twenty million, six thousand, forty".