421118149 has 2 divisors, whose sum is σ = 421118150. Its totient is φ = 421118148.

The previous prime is 421118099. The next prime is 421118177. The reversal of 421118149 is 941811124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341140900 + 79977249 = 18470^2 + 8943^2 .

It is a cyclic number.

It is not a de Polignac number, because 421118149 - 2²¹ = 419020997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421118149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421118189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210559074 + 210559075.

It is an arithmetic number, because the mean of its divisors is an integer number (210559075).

Almost surely, 2^421118149 is an apocalyptic number.

It is an amenable number.

421118149 is a deficient number, since it is larger than the sum of its proper divisors (1).

421118149 is an equidigital number, since it uses as much as digits as its factorization.

421118149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 31.

The square root of 421118149 is about 20521.1634416765. The cubic root of 421118149 is about 749.5512272279.

The spelling of 421118149 in words is "four hundred twenty-one million, one hundred eighteen thousand, one hundred forty-nine".