240213427 has 2 divisors, whose sum is σ = 240213428. Its totient is φ = 240213426.

The previous prime is 240213353. The next prime is 240213431. The reversal of 240213427 is 724312042.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240213427 - 2¹⁹ = 239689139 is a prime.

It is a super-2 number, since 2×240213427² = 115404981022168658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240217427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120106713 + 120106714.

It is an arithmetic number, because the mean of its divisors is an integer number (120106714).

Almost surely, 2^240213427 is an apocalyptic number.

240213427 is a deficient number, since it is larger than the sum of its proper divisors (1).

240213427 is an equidigital number, since it uses as much as digits as its factorization.

240213427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 240213427 is about 15498.8201809041. The cubic root of 240213427 is about 621.6306597543.

Adding to 240213427 its reverse (724312042), we get a palindrome (964525469).

The spelling of 240213427 in words is "two hundred forty million, two hundred thirteen thousand, four hundred twenty-seven".