40142031 has 8 divisors (see below), whose sum is σ = 53565360. Its totient is φ = 26740032.

The previous prime is 40142029. The next prime is 40142057. The reversal of 40142031 is 13024104.

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

It is not a de Polignac number, because 40142031 - 2¹ = 40142029 is a prime.

It is a super-2 number, since 2×40142031² = 3222765305609922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40142031.

It is a congruent 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, 246 + ... + 8963.

It is an arithmetic number, because the mean of its divisors is an integer number (6695670).

Almost surely, 2^40142031 is an apocalyptic number.

40142031 is a deficient number, since it is larger than the sum of its proper divisors (13423329).

40142031 is a wasteful number, since it uses less digits than its factorization.

40142031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 40142031 is about 6335.7739069509. The cubic root of 40142031 is about 342.3994938370.

Adding to 40142031 its reverse (13024104), we get a palindrome (53166135).

The spelling of 40142031 in words is "forty million, one hundred forty-two thousand, thirty-one".