40421519 has 2 divisors, whose sum is σ = 40421520. Its totient is φ = 40421518.

The previous prime is 40421509. The next prime is 40421533. The reversal of 40421519 is 91512404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40421519 - 2⁴ = 40421503 is a prime.

It is a super-2 number, since 2×40421519² = 3267798396534722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40421509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20210759 + 20210760.

It is an arithmetic number, because the mean of its divisors is an integer number (20210760).

Almost surely, 2^40421519 is an apocalyptic number.

40421519 is a deficient number, since it is larger than the sum of its proper divisors (1).

40421519 is an equidigital number, since it uses as much as digits as its factorization.

40421519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 40421519 is about 6357.7919909352. The cubic root of 40421519 is about 343.1923063199.

The spelling of 40421519 in words is "forty million, four hundred twenty-one thousand, five hundred nineteen".