118453421 has 2 divisors, whose sum is σ = 118453422. Its totient is φ = 118453420.

The previous prime is 118453411. The next prime is 118453451. The reversal of 118453421 is 124354811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109956196 + 8497225 = 10486^2 + 2915^2 .

It is a cyclic number.

It is not a de Polignac number, because 118453421 - 2¹⁸ = 118191277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118453411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59226710 + 59226711.

It is an arithmetic number, because the mean of its divisors is an integer number (59226711).

Almost surely, 2^118453421 is an apocalyptic number.

It is an amenable number.

118453421 is a deficient number, since it is larger than the sum of its proper divisors (1).

118453421 is an equidigital number, since it uses as much as digits as its factorization.

118453421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 29.

The square root of 118453421 is about 10883.6308739317. The cubic root of 118453421 is about 491.1142503574.

The spelling of 118453421 in words is "one hundred eighteen million, four hundred fifty-three thousand, four hundred twenty-one".