420302140 has 24 divisors (see below), whose sum is σ = 884560320. Its totient is φ = 167754048.

The previous prime is 420302131. The next prime is 420302177. The reversal of 420302140 is 41203024.

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, 13435 + ... + 31954.

It is an arithmetic number, because the mean of its divisors is an integer number (36856680).

Almost surely, 2^420302140 is an apocalyptic number.

It is an amenable number.

420302140 is an abundant number, since it is smaller than the sum of its proper divisors (464258180).

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

420302140 is a wasteful number, since it uses less digits than its factorization.

420302140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45861 (or 45859 counting only the distinct ones).

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

The square root of 420302140 is about 20501.2716678747. The cubic root of 420302140 is about 749.0667740823.

Adding to 420302140 its reverse (41203024), we get a palindrome (461505164).

The spelling of 420302140 in words is "four hundred twenty million, three hundred two thousand, one hundred forty".