40055142 has 8 divisors (see below), whose sum is σ = 80110296. Its totient is φ = 13351712.

The previous prime is 40055137. The next prime is 40055149. The reversal of 40055142 is 24155004.

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

40055142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40055149) 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, 3337923 + ... + 3337934.

It is an arithmetic number, because the mean of its divisors is an integer number (10013787).

Almost surely, 2^40055142 is an apocalyptic number.

40055142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40055142 is a wasteful number, since it uses less digits than its factorization.

40055142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6675862.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40055142 is about 6328.9131768417. The cubic root of 40055142 is about 342.1522696658.

The spelling of 40055142 in words is "forty million, fifty-five thousand, one hundred forty-two".