420142330 has 16 divisors (see below), whose sum is σ = 756491400. Its totient is φ = 168004672.

The previous prime is 420142309. The next prime is 420142409. The reversal of 420142330 is 33241024.

It can be written as a sum of positive squares in 4 ways, for example, as 377252929 + 42889401 = 19423^2 + 6549^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420142298 and 420142307.

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, 53496 + ... + 60844.

Almost surely, 2^420142330 is an apocalyptic number.

420142330 is a deficient number, since it is larger than the sum of its proper divisors (336349070).

420142330 is a wasteful number, since it uses less digits than its factorization.

420142330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13073.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 420142330 is about 20497.3737342129. The cubic root of 420142330 is about 748.9718237081.

Adding to 420142330 its reverse (33241024), we get a palindrome (453383354).

It can be divided in two parts, 42014 and 2330, that added together give a palindrome (44344).

The spelling of 420142330 in words is "four hundred twenty million, one hundred forty-two thousand, three hundred thirty".