40403245 has 8 divisors (see below), whose sum is σ = 49666680. Its totient is φ = 31534080.

The previous prime is 40403243. The next prime is 40403257. The reversal of 40403245 is 54230404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29929 + 40373316 = 173^2 + 6354^2 .

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

It is not a de Polignac number, because 40403245 - 2¹ = 40403243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40403243) 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, 98340 + ... + 98749.

It is an arithmetic number, because the mean of its divisors is an integer number (6208335).

Almost surely, 2^40403245 is an apocalyptic number.

It is an amenable number.

40403245 is a deficient number, since it is larger than the sum of its proper divisors (9263435).

40403245 is a wasteful number, since it uses less digits than its factorization.

40403245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197135.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 40403245 is about 6356.3546943197. The cubic root of 40403245 is about 343.1405810534.

Adding to 40403245 its reverse (54230404), we get a palindrome (94633649).

The spelling of 40403245 in words is "forty million, four hundred three thousand, two hundred forty-five".