24742391 has 2 divisors, whose sum is σ = 24742392. Its totient is φ = 24742390.

The previous prime is 24742387. The next prime is 24742397. The reversal of 24742391 is 19324742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 24742391 - 2² = 24742387 is a prime.

It is a super-2 number, since 2×24742391² = 1224371824793762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24742397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12371195 + 12371196.

It is an arithmetic number, because the mean of its divisors is an integer number (12371196).

Almost surely, 2^24742391 is an apocalyptic number.

24742391 is a deficient number, since it is larger than the sum of its proper divisors (1).

24742391 is an equidigital number, since it uses as much as digits as its factorization.

24742391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 24742391 is about 4974.1723934741. The cubic root of 24742391 is about 291.3939665365.

The spelling of 24742391 in words is "twenty-four million, seven hundred forty-two thousand, three hundred ninety-one".