40161135 has 48 divisors (see below), whose sum is σ = 75628512. Its totient is φ = 18144000.

The previous prime is 40161113. The next prime is 40161167. The reversal of 40161135 is 53116104.

It is not a de Polignac number, because 40161135 - 2⁵ = 40161103 is a prime.

It is a super-2 number, since 2×40161135² = 3225833528976450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73965 + ... + 74505.

It is an arithmetic number, because the mean of its divisors is an integer number (1575594).

Almost surely, 2^40161135 is an apocalyptic number.

40161135 is a deficient number, since it is larger than the sum of its proper divisors (35467377).

40161135 is a wasteful number, since it uses less digits than its factorization.

40161135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 40161135 is about 6337.2813571752. The cubic root of 40161135 is about 342.4538023541.

Adding to 40161135 its reverse (53116104), we get a palindrome (93277239).

It can be divided in two parts, 4016 and 1135, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 40161135 in words is "forty million, one hundred sixty-one thousand, one hundred thirty-five".