1254196145 has 4 divisors (see below), whose sum is σ = 1505035380. Its totient is φ = 1003356912.

The previous prime is 1254196127. The next prime is 1254196189. The reversal of 1254196145 is 5416914521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5416914521 = 541 ⋅10012781.

It can be written as a sum of positive squares in 2 ways, for example, as 332405824 + 921790321 = 18232^2 + 30361^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254196145 - 2⁸ = 1254195889 is a prime.

It is a super-2 number, since 2×1254196145² = 3146015940265722050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1254196099 and 1254196108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125419610 + ... + 125419619.

It is an arithmetic number, because the mean of its divisors is an integer number (376258845).

Almost surely, 2^1254196145 is an apocalyptic number.

It is an amenable number.

1254196145 is a deficient number, since it is larger than the sum of its proper divisors (250839235).

1254196145 is an equidigital number, since it uses as much as digits as its factorization.

1254196145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250839234.

The product of its digits is 43200, while the sum is 38.

The square root of 1254196145 is about 35414.6317925233. The cubic root of 1254196145 is about 1078.4213747907.

The spelling of 1254196145 in words is "one billion, two hundred fifty-four million, one hundred ninety-six thousand, one hundred forty-five".