40142241 has 12 divisors (see below), whose sum is σ = 59854080. Its totient is φ = 25898040.

The previous prime is 40142213. The next prime is 40142251. The reversal of 40142241 is 14224104.

It is not a de Polignac number, because 40142241 - 2⁹ = 40141729 is a prime.

It is a super-2 number, since 2×40142241² = 3222799025004162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71661 + ... + 72218.

It is an arithmetic number, because the mean of its divisors is an integer number (4987840).

Almost surely, 2^40142241 is an apocalyptic number.

It is an amenable number.

40142241 is a deficient number, since it is larger than the sum of its proper divisors (19711839).

40142241 is a wasteful number, since it uses less digits than its factorization.

40142241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143916 (or 143913 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 40142241 is about 6335.7904794903. The cubic root of 40142241 is about 342.4000909149.

Adding to 40142241 its reverse (14224104), we get a palindrome (54366345).

The spelling of 40142241 in words is "forty million, one hundred forty-two thousand, two hundred forty-one".