1254131121 has 8 divisors (see below), whose sum is σ = 1679352480. Its totient is φ = 832498592.

The previous prime is 1254131111. The next prime is 1254131171. The reversal of 1254131121 is 1211314521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1254131121 - 2²³ = 1245742513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1254131111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896391 + ... + 897788.

It is an arithmetic number, because the mean of its divisors is an integer number (209919060).

Almost surely, 2^1254131121 is an apocalyptic number.

It is an amenable number.

1254131121 is a deficient number, since it is larger than the sum of its proper divisors (425221359).

1254131121 is a wasteful number, since it uses less digits than its factorization.

1254131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794415.

The product of its digits is 240, while the sum is 21.

The square root of 1254131121 is about 35413.7137419955. The cubic root of 1254131121 is about 1078.4027374923.

Adding to 1254131121 its reverse (1211314521), we get a palindrome (2465445642).

The spelling of 1254131121 in words is "one billion, two hundred fifty-four million, one hundred thirty-one thousand, one hundred twenty-one".