40126405 has 8 divisors (see below), whose sum is σ = 52529184. Its totient is φ = 29182800.

The previous prime is 40126403. The next prime is 40126417. The reversal of 40126405 is 50462104.

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

It is not a de Polignac number, because 40126405 - 2¹ = 40126403 is a prime.

It is a super-2 number, since 2×40126405² = 3220256756448050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40126403) 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, 364731 + ... + 364840.

It is an arithmetic number, because the mean of its divisors is an integer number (6566148).

Almost surely, 2^40126405 is an apocalyptic number.

It is an amenable number.

40126405 is a deficient number, since it is larger than the sum of its proper divisors (12402779).

40126405 is a wasteful number, since it uses less digits than its factorization.

40126405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729587.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 40126405 is about 6334.5406305430. The cubic root of 40126405 is about 342.3550597052.

Adding to 40126405 its reverse (50462104), we get a palindrome (90588509).

The spelling of 40126405 in words is "forty million, one hundred twenty-six thousand, four hundred five".