118744421 has 2 divisors, whose sum is σ = 118744422. Its totient is φ = 118744420.

The previous prime is 118744411. The next prime is 118744453. The reversal of 118744421 is 124447811.

It is an a-pointer prime, because the next prime (118744453) can be obtained adding 118744421 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109202500 + 9541921 = 10450^2 + 3089^2 .

It is an emirp because it is prime and its reverse (124447811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118744421 - 2²⁶ = 51635557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118744411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59372210 + 59372211.

It is an arithmetic number, because the mean of its divisors is an integer number (59372211).

Almost surely, 2^118744421 is an apocalyptic number.

It is an amenable number.

118744421 is a deficient number, since it is larger than the sum of its proper divisors (1).

118744421 is an equidigital number, since it uses as much as digits as its factorization.

118744421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 32.

The square root of 118744421 is about 10896.9913737692. The cubic root of 118744421 is about 491.5160886903.

The spelling of 118744421 in words is "one hundred eighteen million, seven hundred forty-four thousand, four hundred twenty-one".