117742451 has 8 divisors (see below), whose sum is σ = 123311904. Its totient is φ = 112210560.

The previous prime is 117742421. The next prime is 117742453. The reversal of 117742451 is 154247711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117742451 - 2¹⁴ = 117726067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117742453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2870 + ... + 15611.

It is an arithmetic number, because the mean of its divisors is an integer number (15413988).

Almost surely, 2^117742451 is an apocalyptic number.

117742451 is a deficient number, since it is larger than the sum of its proper divisors (5569453).

117742451 is a wasteful number, since it uses less digits than its factorization.

117742451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18781.

The product of its digits is 7840, while the sum is 32.

The square root of 117742451 is about 10850.9193619711. The cubic root of 117742451 is about 490.1297046613.

The spelling of 117742451 in words is "one hundred seventeen million, seven hundred forty-two thousand, four hundred fifty-one".