40120219 has 2 divisors, whose sum is σ = 40120220. Its totient is φ = 40120218.

The previous prime is 40120217. The next prime is 40120259. The reversal of 40120219 is 91202104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40120219 - 2¹ = 40120217 is a prime.

It is a super-2 number, since 2×40120219² = 3219263945215922, which contains 22 as substring.

Together with 40120217, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 40120196 and 40120205.

It is not a weakly prime, because it can be changed into another prime (40120217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20060109 + 20060110.

It is an arithmetic number, because the mean of its divisors is an integer number (20060110).

Almost surely, 2^40120219 is an apocalyptic number.

40120219 is a deficient number, since it is larger than the sum of its proper divisors (1).

40120219 is an equidigital number, since it uses as much as digits as its factorization.

40120219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 40120219 is about 6334.0523363799. The cubic root of 40120219 is about 342.3374659933.

The spelling of 40120219 in words is "forty million, one hundred twenty thousand, two hundred nineteen".