24742981 has 2 divisors, whose sum is σ = 24742982. Its totient is φ = 24742980.

The previous prime is 24742961. The next prime is 24742987. The reversal of 24742981 is 18924742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21538881 + 3204100 = 4641^2 + 1790^2 .

It is a cyclic number.

It is not a de Polignac number, because 24742981 - 2⁷ = 24742853 is a prime.

It is a super-2 number, since 2×24742981² = 1224430217532722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24742981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24742987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12371490 + 12371491.

It is an arithmetic number, because the mean of its divisors is an integer number (12371491).

Almost surely, 2^24742981 is an apocalyptic number.

It is an amenable number.

24742981 is a deficient number, since it is larger than the sum of its proper divisors (1).

24742981 is an equidigital number, since it uses as much as digits as its factorization.

24742981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 24742981 is about 4974.2316994688. The cubic root of 24742981 is about 291.3962826839.

The spelling of 24742981 in words is "twenty-four million, seven hundred forty-two thousand, nine hundred eighty-one".