42106874 has 4 divisors (see below), whose sum is σ = 63160314. Its totient is φ = 21053436.

The previous prime is 42106873. The next prime is 42106901. The reversal of 42106874 is 47860124.

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

It can be written as a sum of positive squares in only one way, i.e., 40768225 + 1338649 = 6385^2 + 1157^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42106874.

It is not an unprimeable number, because it can be changed into a prime (42106873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10526717 + ... + 10526720.

Almost surely, 2^42106874 is an apocalyptic number.

42106874 is a deficient number, since it is larger than the sum of its proper divisors (21053440).

42106874 is a wasteful number, since it uses less digits than its factorization.

42106874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21053439.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 42106874 is about 6488.9809677637. The cubic root of 42106874 is about 347.8972535445.

Adding to 42106874 its reverse (47860124), we get a palindrome (89966998).

The spelling of 42106874 in words is "forty-two million, one hundred six thousand, eight hundred seventy-four".