42017774 has 4 divisors (see below), whose sum is σ = 63026664. Its totient is φ = 21008886.

The previous prime is 42017749. The next prime is 42017783. The reversal of 42017774 is 47771024.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42017774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10504442 + ... + 10504445.

It is an arithmetic number, because the mean of its divisors is an integer number (15756666).

Almost surely, 2^42017774 is an apocalyptic number.

42017774 is a deficient number, since it is larger than the sum of its proper divisors (21008890).

42017774 is a wasteful number, since it uses less digits than its factorization.

42017774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21008889.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 42017774 is about 6482.1118472300. Note that the first 3 decimals coincide. The cubic root of 42017774 is about 347.6516916191.

Adding to 42017774 its reverse (47771024), we get a palindrome (89788798).

The spelling of 42017774 in words is "forty-two million, seventeen thousand, seven hundred seventy-four".