118287242 has 4 divisors (see below), whose sum is σ = 177430866. Its totient is φ = 59143620.

The previous prime is 118287223. The next prime is 118287251. The reversal of 118287242 is 242782811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242782811 = 6473 ⋅37507.

It can be written as a sum of positive squares in only one way, i.e., 67749361 + 50537881 = 8231^2 + 7109^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29571809 + ... + 29571812.

Almost surely, 2^118287242 is an apocalyptic number.

118287242 is a deficient number, since it is larger than the sum of its proper divisors (59143624).

118287242 is an equidigital number, since it uses as much as digits as its factorization.

118287242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59143623.

The product of its digits is 14336, while the sum is 35.

The square root of 118287242 is about 10875.9938396452. The cubic root of 118287242 is about 490.8844805200.

The spelling of 118287242 in words is "one hundred eighteen million, two hundred eighty-seven thousand, two hundred forty-two".