42118742 has 4 divisors (see below), whose sum is σ = 63178116. Its totient is φ = 21059370.

The previous prime is 42118733. The next prime is 42118751. The reversal of 42118742 is 24781124.

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

It is an interprime number because it is at equal distance from previous prime (42118733) and next prime (42118751).

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, 10529684 + ... + 10529687.

It is an arithmetic number, because the mean of its divisors is an integer number (15794529).

Almost surely, 2^42118742 is an apocalyptic number.

42118742 is a deficient number, since it is larger than the sum of its proper divisors (21059374).

42118742 is a wasteful number, since it uses less digits than its factorization.

42118742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21059373.

The product of its digits is 3584, while the sum is 29.

The square root of 42118742 is about 6489.8953766606. The cubic root of 42118742 is about 347.9299359101.

Adding to 42118742 its reverse (24781124), we get a palindrome (66899866).

The spelling of 42118742 in words is "forty-two million, one hundred eighteen thousand, seven hundred forty-two".