118367421 has 4 divisors (see below), whose sum is σ = 157823232. Its totient is φ = 78911612.

The previous prime is 118367401. The next prime is 118367423. The reversal of 118367421 is 124763811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118367421 - 2¹⁰ = 118366397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118367423) 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, 19727901 + ... + 19727906.

It is an arithmetic number, because the mean of its divisors is an integer number (39455808).

Almost surely, 2^118367421 is an apocalyptic number.

It is an amenable number.

118367421 is a deficient number, since it is larger than the sum of its proper divisors (39455811).

118367421 is an equidigital number, since it uses as much as digits as its factorization.

118367421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39455810.

The product of its digits is 8064, while the sum is 33.

The square root of 118367421 is about 10879.6792691697. The cubic root of 118367421 is about 490.9953680414.

The spelling of 118367421 in words is "one hundred eighteen million, three hundred sixty-seven thousand, four hundred twenty-one".