42270140 has 36 divisors (see below), whose sum is σ = 97576248. Its totient is φ = 15370080.

The previous prime is 42270121. The next prime is 42270167. The reversal of 42270140 is 4107224.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6314 + ... + 11153.

Almost surely, 2^42270140 is an apocalyptic number.

It is an amenable number.

42270140 is an abundant number, since it is smaller than the sum of its proper divisors (55306108).

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

42270140 is a wasteful number, since it uses less digits than its factorization.

42270140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17498 (or 17485 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 42270140 is about 6501.5490461889. The cubic root of 42270140 is about 348.3463214609.

Adding to 42270140 its reverse (4107224), we get a palindrome (46377364).

The spelling of 42270140 in words is "forty-two million, two hundred seventy thousand, one hundred forty".