40142001 has 8 divisors (see below), whose sum is σ = 53678304. Its totient is φ = 26683520.

The previous prime is 40141987. The next prime is 40142021. The reversal of 40142001 is 10024104.

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

It is a cyclic number.

It is not a de Polignac number, because 40142001 - 2²¹ = 38044849 is a prime.

It is a super-2 number, since 2×40142001² = 3222760488568002, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40142021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18240 + ... + 20321.

It is an arithmetic number, because the mean of its divisors is an integer number (6709788).

Almost surely, 2^40142001 is an apocalyptic number.

It is an amenable number.

40142001 is a deficient number, since it is larger than the sum of its proper divisors (13536303).

40142001 is a wasteful number, since it uses less digits than its factorization.

40142001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38911.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 40142001 is about 6335.7715394417. The cubic root of 40142001 is about 342.3994085399.

Adding to 40142001 its reverse (10024104), we get a palindrome (50166105).

The spelling of 40142001 in words is "forty million, one hundred forty-two thousand, one".