40142535 has 32 divisors (see below), whose sum is σ = 68463360. Its totient is φ = 20026368.

The previous prime is 40142533. The next prime is 40142549. The reversal of 40142535 is 53524104.

It is not a de Polignac number, because 40142535 - 2¹ = 40142533 is a prime.

It is a super-2 number, since 2×40142535² = 3222846232452450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22807 + ... + 24503.

It is an arithmetic number, because the mean of its divisors is an integer number (2139480).

Almost surely, 2^40142535 is an apocalyptic number.

40142535 is a deficient number, since it is larger than the sum of its proper divisors (28320825).

40142535 is a wasteful number, since it uses less digits than its factorization.

40142535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40142535 is about 6335.8136809726. The cubic root of 40142535 is about 342.4009268206.

Adding to 40142535 its reverse (53524104), we get a palindrome (93666639).

The spelling of 40142535 in words is "forty million, one hundred forty-two thousand, five hundred thirty-five".