1423520149 has 2 divisors, whose sum is σ = 1423520150. Its totient is φ = 1423520148.

The previous prime is 1423520113. The next prime is 1423520167. The reversal of 1423520149 is 9410253241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1309137124 + 114383025 = 36182^2 + 10695^2 .

It is an emirp because it is prime and its reverse (9410253241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1423520149 - 2¹¹ = 1423518101 is a prime.

It is a super-2 number, since 2×1423520149² = 4052819229217964402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1423520149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423520179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711760074 + 711760075.

It is an arithmetic number, because the mean of its divisors is an integer number (711760075).

Almost surely, 2^1423520149 is an apocalyptic number.

It is an amenable number.

1423520149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423520149 is an equidigital number, since it uses as much as digits as its factorization.

1423520149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1423520149 is about 37729.5659794809. The cubic root of 1423520149 is about 1124.9188811304.

The spelling of 1423520149 in words is "one billion, four hundred twenty-three million, five hundred twenty thousand, one hundred forty-nine".