1230440149 has 2 divisors, whose sum is σ = 1230440150. Its totient is φ = 1230440148.

The previous prime is 1230440137. The next prime is 1230440257. The reversal of 1230440149 is 9410440321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 917787025 + 312653124 = 30295^2 + 17682^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230440149 - 2¹⁹ = 1229915861 is a prime.

It is a super-2 number, since 2×1230440149² = 3027965920542284402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230446149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615220074 + 615220075.

It is an arithmetic number, because the mean of its divisors is an integer number (615220075).

Almost surely, 2^1230440149 is an apocalyptic number.

It is an amenable number.

1230440149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230440149 is an equidigital number, since it uses as much as digits as its factorization.

1230440149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1230440149 is about 35077.6303219017. The cubic root of 1230440149 is about 1071.5690576480.

The spelling of 1230440149 in words is "one billion, two hundred thirty million, four hundred forty thousand, one hundred forty-nine".