40345130 has 48 divisors (see below), whose sum is σ = 85235976. Its totient is φ = 13708800.

The previous prime is 40345103. The next prime is 40345139. The reversal of 40345130 is 3154304.

It can be written as a sum of positive squares in 4 ways, for example, as 38204761 + 2140369 = 6181^2 + 1463^2 .

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (40345139) 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, 66830 + ... + 67430.

Almost surely, 2^40345130 is an apocalyptic number.

40345130 is an abundant number, since it is smaller than the sum of its proper divisors (44890846).

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

40345130 is a wasteful number, since it uses less digits than its factorization.

40345130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 40345130 is about 6351.7816398236. The cubic root of 40345130 is about 342.9759805476.

Adding to 40345130 its reverse (3154304), we get a palindrome (43499434).

The spelling of 40345130 in words is "forty million, three hundred forty-five thousand, one hundred thirty".