42210774 has 16 divisors (see below), whose sum is σ = 93801840. Its totient is φ = 14070240.

The previous prime is 42210743. The next prime is 42210781. The reversal of 42210774 is 47701224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 390787 + ... + 390894.

It is an arithmetic number, because the mean of its divisors is an integer number (5862615).

Almost surely, 2^42210774 is an apocalyptic number.

42210774 is an abundant number, since it is smaller than the sum of its proper divisors (51591066).

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

42210774 is a wasteful number, since it uses less digits than its factorization.

42210774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781692 (or 781686 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 42210774 is about 6496.9819147047. The cubic root of 42210774 is about 348.1831675455.

Adding to 42210774 its reverse (47701224), we get a palindrome (89911998).

The spelling of 42210774 in words is "forty-two million, two hundred ten thousand, seven hundred seventy-four".