42127770 has 32 divisors (see below), whose sum is σ = 102824640. Its totient is φ = 11043200.

The previous prime is 42127747. The next prime is 42127783. The reversal of 42127770 is 7772124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10131 + ... + 13670.

It is an arithmetic number, because the mean of its divisors is an integer number (3213270).

Almost surely, 2^42127770 is an apocalyptic number.

42127770 is an abundant number, since it is smaller than the sum of its proper divisors (60696870).

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

42127770 is a wasteful number, since it uses less digits than its factorization.

42127770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23870.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 42127770 is about 6490.5908821925. The cubic root of 42127770 is about 347.9547933086.

Adding to 42127770 its reverse (7772124), we get a palindrome (49899894).

The spelling of 42127770 in words is "forty-two million, one hundred twenty-seven thousand, seven hundred seventy".