117542749 has 2 divisors, whose sum is σ = 117542750. Its totient is φ = 117542748.

The previous prime is 117542741. The next prime is 117542801. The reversal of 117542749 is 947245711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64689849 + 52852900 = 8043^2 + 7270^2 .

It is a cyclic number.

It is not a de Polignac number, because 117542749 - 2³ = 117542741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117542741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58771374 + 58771375.

It is an arithmetic number, because the mean of its divisors is an integer number (58771375).

Almost surely, 2^117542749 is an apocalyptic number.

It is an amenable number.

117542749 is a deficient number, since it is larger than the sum of its proper divisors (1).

117542749 is an equidigital number, since it uses as much as digits as its factorization.

117542749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 40.

The square root of 117542749 is about 10841.7133793511. The cubic root of 117542749 is about 489.8524462005.

The spelling of 117542749 in words is "one hundred seventeen million, five hundred forty-two thousand, seven hundred forty-nine".