1240424051 has 2 divisors, whose sum is σ = 1240424052. Its totient is φ = 1240424050.

The previous prime is 1240424041. The next prime is 1240424089. The reversal of 1240424051 is 1504240421.

It is a weak prime.

It is an emirp because it is prime and its reverse (1504240421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240424051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1240424011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620212025 + 620212026.

It is an arithmetic number, because the mean of its divisors is an integer number (620212026).

Almost surely, 2^1240424051 is an apocalyptic number.

1240424051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240424051 is an equidigital number, since it uses as much as digits as its factorization.

1240424051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1240424051 is about 35219.6543282299. The cubic root of 1240424051 is about 1074.4595230823.

Adding to 1240424051 its reverse (1504240421), we get a palindrome (2744664472).

The spelling of 1240424051 in words is "one billion, two hundred forty million, four hundred twenty-four thousand, fifty-one".