40242142 has 8 divisors (see below), whose sum is σ = 60397632. Its totient is φ = 20109600.

The previous prime is 40242119. The next prime is 40242173. The reversal of 40242142 is 24124204.

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, 334 + ... + 8977.

It is an arithmetic number, because the mean of its divisors is an integer number (7549704).

Almost surely, 2^40242142 is an apocalyptic number.

40242142 is a deficient number, since it is larger than the sum of its proper divisors (20155490).

40242142 is a wasteful number, since it uses less digits than its factorization.

40242142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11474.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 40242142 is about 6343.6694428383. The cubic root of 40242142 is about 342.6838964843.

Adding to 40242142 its reverse (24124204), we get a palindrome (64366346).

The spelling of 40242142 in words is "forty million, two hundred forty-two thousand, one hundred forty-two".