42142142 has 8 divisors (see below), whose sum is σ = 72243696. Its totient is φ = 18060912.

The previous prime is 42142091. The next prime is 42142151. The reversal of 42142142 is 24124124.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1505063 + ... + 1505090.

It is an arithmetic number, because the mean of its divisors is an integer number (9030462).

Almost surely, 2^42142142 is an apocalyptic number.

42142142 is a deficient number, since it is larger than the sum of its proper divisors (30101554).

42142142 is a wasteful number, since it uses less digits than its factorization.

42142142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010162.

The product of its digits is 512, while the sum is 20.

The square root of 42142142 is about 6491.6979288935. The cubic root of 42142142 is about 347.9943573754.

Adding to 42142142 its reverse (24124124), we get a palindrome (66266266).

The spelling of 42142142 in words is "forty-two million, one hundred forty-two thousand, one hundred forty-two".