40030245 has 24 divisors (see below), whose sum is σ = 73039200. Its totient is φ = 20225376.

The previous prime is 40030241. The next prime is 40030247. The reversal of 40030245 is 54203004.

It is a happy number.

It is not a de Polignac number, because 40030245 - 2² = 40030241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40030241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22555 + ... + 24264.

It is an arithmetic number, because the mean of its divisors is an integer number (3043300).

Almost surely, 2^40030245 is an apocalyptic number.

40030245 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40030245 is a deficient number, since it is larger than the sum of its proper divisors (33008955).

40030245 is a wasteful number, since it uses less digits than its factorization.

40030245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46849 (or 46846 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40030245 is about 6326.9459457150. The cubic root of 40030245 is about 342.0813646567.

Adding to 40030245 its reverse (54203004), we get a palindrome (94233249).

The spelling of 40030245 in words is "forty million, thirty thousand, two hundred forty-five".