1254105133 has 4 divisors (see below), whose sum is σ = 1277767548. Its totient is φ = 1230442720.

The previous prime is 1254105119. The next prime is 1254105157. The reversal of 1254105133 is 3315014521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1090188324 + 163916809 = 33018^2 + 12803^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254105133 - 2¹³ = 1254096941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1254105098 and 1254105107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254105173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11831128 + ... + 11831233.

It is an arithmetic number, because the mean of its divisors is an integer number (319441887).

Almost surely, 2^1254105133 is an apocalyptic number.

It is an amenable number.

1254105133 is a deficient number, since it is larger than the sum of its proper divisors (23662415).

1254105133 is an equidigital number, since it uses as much as digits as its factorization.

1254105133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23662414.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1254105133 is about 35413.3468200903. The cubic root of 1254105133 is about 1078.3952885838.

Adding to 1254105133 its reverse (3315014521), we get a palindrome (4569119654).

The spelling of 1254105133 in words is "one billion, two hundred fifty-four million, one hundred five thousand, one hundred thirty-three".