40145403 has 8 divisors (see below), whose sum is σ = 55254016. Its totient is φ = 25900200.

The previous prime is 40145389. The next prime is 40145411. The reversal of 40145403 is 30454104.

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

It is not a de Polignac number, because 40145403 - 2²⁴ = 23368187 is a prime.

It is a super-2 number, since 2×40145403² = 3223306764064818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40145403.

It is not an unprimeable number, because it can be changed into a prime (40140403) 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, 215743 + ... + 215928.

It is an arithmetic number, because the mean of its divisors is an integer number (6906752).

Almost surely, 2^40145403 is an apocalyptic number.

40145403 is a deficient number, since it is larger than the sum of its proper divisors (15108613).

40145403 is a wasteful number, since it uses less digits than its factorization.

40145403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431705.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40145403 is about 6336.0400093434. The cubic root of 40145403 is about 342.4090809517.

Adding to 40145403 its reverse (30454104), we get a palindrome (70599507).

The spelling of 40145403 in words is "forty million, one hundred forty-five thousand, four hundred three".