42107774 has 4 divisors (see below), whose sum is σ = 63161664. Its totient is φ = 21053886.

The previous prime is 42107773. The next prime is 42107783. The reversal of 42107774 is 47770124.

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 42107774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42107773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10526942 + ... + 10526945.

It is an arithmetic number, because the mean of its divisors is an integer number (15790416).

Almost surely, 2^42107774 is an apocalyptic number.

42107774 is a deficient number, since it is larger than the sum of its proper divisors (21053890).

42107774 is a wasteful number, since it uses less digits than its factorization.

42107774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21053889.

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

The square root of 42107774 is about 6489.0503157242. The cubic root of 42107774 is about 347.8997321999.

Adding to 42107774 its reverse (47770124), we get a palindrome (89877898).

The spelling of 42107774 in words is "forty-two million, one hundred seven thousand, seven hundred seventy-four".