118420051 has 4 divisors (see below), whose sum is σ = 118521504. Its totient is φ = 118318600.

The previous prime is 118420039. The next prime is 118420061. The reversal of 118420051 is 150024811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150024811 = 223 ⋅672757.

It is a cyclic number.

It is not a de Polignac number, because 118420051 - 2¹³ = 118411859 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118420061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48955 + ... + 51316.

It is an arithmetic number, because the mean of its divisors is an integer number (29630376).

Almost surely, 2^118420051 is an apocalyptic number.

118420051 is a deficient number, since it is larger than the sum of its proper divisors (101453).

118420051 is a wasteful number, since it uses less digits than its factorization.

118420051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101452.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 118420051 is about 10882.0977297578. The cubic root of 118420051 is about 491.0681280881.

Adding to 118420051 its reverse (150024811), we get a palindrome (268444862).

The spelling of 118420051 in words is "one hundred eighteen million, four hundred twenty thousand, fifty-one".