420142040 has 16 divisors (see below), whose sum is σ = 945319680. Its totient is φ = 168056800.

The previous prime is 420142013. The next prime is 420142043. The reversal of 420142040 is 40241024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420142043) 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, 5251736 + ... + 5251815.

It is an arithmetic number, because the mean of its divisors is an integer number (59082480).

Almost surely, 2^420142040 is an apocalyptic number.

420142040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420142040 is an abundant number, since it is smaller than the sum of its proper divisors (525177640).

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

420142040 is a wasteful number, since it uses less digits than its factorization.

420142040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10503562 (or 10503558 counting only the distinct ones).

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

The square root of 420142040 is about 20497.3666601347. The cubic root of 420142040 is about 748.9716513840.

Adding to 420142040 its reverse (40241024), we get a palindrome (460383064).

The spelling of 420142040 in words is "four hundred twenty million, one hundred forty-two thousand, forty".