240021043 has 2 divisors, whose sum is σ = 240021044. Its totient is φ = 240021042.

The previous prime is 240021013. The next prime is 240021059. The reversal of 240021043 is 340120042.

It is an a-pointer prime, because the next prime (240021059) can be obtained adding 240021043 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240021043 - 2¹⁷ = 239889971 is a prime.

It is a super-2 number, since 2×240021043² = 115220202165615698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240021013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120010521 + 120010522.

It is an arithmetic number, because the mean of its divisors is an integer number (120010522).

Almost surely, 2^240021043 is an apocalyptic number.

240021043 is a deficient number, since it is larger than the sum of its proper divisors (1).

240021043 is an equidigital number, since it uses as much as digits as its factorization.

240021043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 240021043 is about 15492.6125298479. The cubic root of 240021043 is about 621.4646632971.

Adding to 240021043 its reverse (340120042), we get a palindrome (580141085).

The spelling of 240021043 in words is "two hundred forty million, twenty-one thousand, forty-three".