118746421 has 2 divisors, whose sum is σ = 118746422. Its totient is φ = 118746420.

The previous prime is 118746413. The next prime is 118746451. The reversal of 118746421 is 124647811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65383396 + 53363025 = 8086^2 + 7305^2 .

It is an emirp because it is prime and its reverse (124647811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118746421 - 2³ = 118746413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118746451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59373210 + 59373211.

It is an arithmetic number, because the mean of its divisors is an integer number (59373211).

Almost surely, 2^118746421 is an apocalyptic number.

It is an amenable number.

118746421 is a deficient number, since it is larger than the sum of its proper divisors (1).

118746421 is an equidigital number, since it uses as much as digits as its factorization.

118746421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 118746421 is about 10897.0831418320. The cubic root of 118746421 is about 491.5188481930.

The spelling of 118746421 in words is "one hundred eighteen million, seven hundred forty-six thousand, four hundred twenty-one".