40131126 has 80 divisors (see below), whose sum is σ = 105287424. Its totient is φ = 11185776.

The previous prime is 40131121. The next prime is 40131137. The reversal of 40131126 is 62113104.

It is a happy number.

It is a super-2 number, since 2×40131126² = 3221014548055752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40131099 and 40131108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40131121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 48351 + ... + 49173.

Almost surely, 2^40131126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40131126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52643712).

40131126 is an abundant number, since it is smaller than the sum of its proper divisors (65156298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40131126 is a wasteful number, since it uses less digits than its factorization.

40131126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 40131126 is about 6334.9132590747. The cubic root of 40131126 is about 342.3684855683.

The spelling of 40131126 in words is "forty million, one hundred thirty-one thousand, one hundred twenty-six".