40020130 has 8 divisors (see below), whose sum is σ = 72036252. Its totient is φ = 16008048.

The previous prime is 40020119. The next prime is 40020131. The reversal of 40020130 is 3102004.

It can be written as a sum of positive squares in 2 ways, for example, as 37564641 + 2455489 = 6129^2 + 1567^2 .

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

It is a super-2 number, since 2×40020130² = 3203221610433800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 4002013 = 40020130 / (4 + 0 + 0 + 2 + 0 + 1 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (40020131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000997 + ... + 2001016.

Almost surely, 2^40020130 is an apocalyptic number.

40020130 is a deficient number, since it is larger than the sum of its proper divisors (32016122).

40020130 is a wasteful number, since it uses less digits than its factorization.

40020130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4002020.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 40020130 is about 6326.1465363995. The cubic root of 40020130 is about 342.0525494073.

Adding to 40020130 its reverse (3102004), we get a palindrome (43122134).

The spelling of 40020130 in words is "forty million, twenty thousand, one hundred thirty".