1219525123 has 2 divisors, whose sum is σ = 1219525124. Its totient is φ = 1219525122.

The previous prime is 1219525093. The next prime is 1219525147. The reversal of 1219525123 is 3215259121.

It is a strong prime.

It is an emirp because it is prime and its reverse (3215259121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1219525123 - 2¹⁷ = 1219394051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1219525163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609762561 + 609762562.

It is an arithmetic number, because the mean of its divisors is an integer number (609762562).

Almost surely, 2^1219525123 is an apocalyptic number.

1219525123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219525123 is an equidigital number, since it uses as much as digits as its factorization.

1219525123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 31.

The square root of 1219525123 is about 34921.6998870330. The cubic root of 1219525123 is about 1068.3910727599.

The spelling of 1219525123 in words is "one billion, two hundred nineteen million, five hundred twenty-five thousand, one hundred twenty-three".