42142786 has 8 divisors (see below), whose sum is σ = 72244800. Its totient is φ = 18061188.

The previous prime is 42142781. The next prime is 42142823. The reversal of 42142786 is 68724124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42142781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1505086 + ... + 1505113.

It is an arithmetic number, because the mean of its divisors is an integer number (9030600).

Almost surely, 2^42142786 is an apocalyptic number.

42142786 is a deficient number, since it is larger than the sum of its proper divisors (30102014).

42142786 is a wasteful number, since it uses less digits than its factorization.

42142786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010208.

The product of its digits is 21504, while the sum is 34.

The square root of 42142786 is about 6491.7475305190. The cubic root of 42142786 is about 347.9961300050.

The spelling of 42142786 in words is "forty-two million, one hundred forty-two thousand, seven hundred eighty-six".