420140022 has 16 divisors (see below), whose sum is σ = 840516912. Its totient is φ = 140007200.

The previous prime is 420140009. The next prime is 420140041. The reversal of 420140022 is 220041024.

It is a junction number, because it is equal to n+sod(n) for n = 420139983 and 420140010.

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, 20272 + ... + 35372.

It is an arithmetic number, because the mean of its divisors is an integer number (52532307).

Almost surely, 2^420140022 is an apocalyptic number.

420140022 is an abundant number, since it is smaller than the sum of its proper divisors (420376890).

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

420140022 is a wasteful number, since it uses less digits than its factorization.

420140022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19743.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 420140022 is about 20497.3174342400. The cubic root of 420140022 is about 748.9704522441.

Adding to 420140022 its reverse (220041024), we get a palindrome (640181046).

The spelling of 420140022 in words is "four hundred twenty million, one hundred forty thousand, twenty-two".