40142441 has 4 divisors (see below), whose sum is σ = 40517712. Its totient is φ = 39767172.

The previous prime is 40142419. The next prime is 40142449. The reversal of 40142441 is 14424104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40142441 - 2²² = 35948137 is a prime.

It is a super-2 number, since 2×40142441² = 3222831138876962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40142449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187475 + ... + 187688.

It is an arithmetic number, because the mean of its divisors is an integer number (10129428).

Almost surely, 2^40142441 is an apocalyptic number.

It is an amenable number.

40142441 is a deficient number, since it is larger than the sum of its proper divisors (375271).

40142441 is a wasteful number, since it uses less digits than its factorization.

40142441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375270.

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

The square root of 40142441 is about 6335.8062628209. The cubic root of 40142441 is about 342.4006595587.

Adding to 40142441 its reverse (14424104), we get a palindrome (54566545).

The spelling of 40142441 in words is "forty million, one hundred forty-two thousand, four hundred forty-one".