24742987 has 2 divisors, whose sum is σ = 24742988. Its totient is φ = 24742986.

The previous prime is 24742981. The next prime is 24743021. The reversal of 24742987 is 78924742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 24742987 - 2⁷ = 24742859 is a prime.

It is a super-2 number, since 2×24742987² = 1224430811364338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (24742981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12371493 + 12371494.

It is an arithmetic number, because the mean of its divisors is an integer number (12371494).

Almost surely, 2^24742987 is an apocalyptic number.

24742987 is a deficient number, since it is larger than the sum of its proper divisors (1).

24742987 is an equidigital number, since it uses as much as digits as its factorization.

24742987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 24742987 is about 4974.2323025770. The cubic root of 24742987 is about 291.3963062378.

It can be divided in two parts, 247 and 42987, that added together give a palindrome (43234).

The spelling of 24742987 in words is "twenty-four million, seven hundred forty-two thousand, nine hundred eighty-seven".