40142501 has 4 divisors (see below), whose sum is σ = 45877152. Its totient is φ = 34407852.

The previous prime is 40142483. The next prime is 40142503. The reversal of 40142501 is 10524104.

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 a de Polignac number, because none of the positive numbers 2^k-40142501 is a prime.

It is a super-3 number, since 3×40142501³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40142501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142503) 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, 2867315 + ... + 2867328.

It is an arithmetic number, because the mean of its divisors is an integer number (11469288).

Almost surely, 2^40142501 is an apocalyptic number.

It is an amenable number.

40142501 is a deficient number, since it is larger than the sum of its proper divisors (5734651).

40142501 is an equidigital number, since it uses as much as digits as its factorization.

40142501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734650.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 40142501 is about 6335.8109978124. The cubic root of 40142501 is about 342.4008301515.

Adding to 40142501 its reverse (10524104), we get a palindrome (50666605).

The spelling of 40142501 in words is "forty million, one hundred forty-two thousand, five hundred one".