420105142 has 8 divisors (see below), whose sum is σ = 639563256. Its totient is φ = 206917392.

The previous prime is 420105131. The next prime is 420105199. The reversal of 420105142 is 241501024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1567423 + ... + 1567690.

It is an arithmetic number, because the mean of its divisors is an integer number (79945407).

Almost surely, 2^420105142 is an apocalyptic number.

420105142 is a deficient number, since it is larger than the sum of its proper divisors (219458114).

420105142 is a wasteful number, since it uses less digits than its factorization.

420105142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135182.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 420105142 is about 20496.4665735341. The cubic root of 420105142 is about 748.9497251762.

Adding to 420105142 its reverse (241501024), we get a palindrome (661606166).

The spelling of 420105142 in words is "four hundred twenty million, one hundred five thousand, one hundred forty-two".