1261252124 has 12 divisors (see below), whose sum is σ = 2407845048. Its totient is φ = 573296400.

The previous prime is 1261252087. The next prime is 1261252133. The reversal of 1261252124 is 4212521621.

It is a super-2 number, since 2×1261252124² = 3181513840589022752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1261252093 and 1261252102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14332367 + ... + 14332454.

It is an arithmetic number, because the mean of its divisors is an integer number (200653754).

Almost surely, 2^1261252124 is an apocalyptic number.

It is an amenable number.

1261252124 is a deficient number, since it is larger than the sum of its proper divisors (1146592924).

1261252124 is a wasteful number, since it uses less digits than its factorization.

1261252124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28664836 (or 28664834 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 1261252124 is about 35514.1116177781. Note that the first 3 decimals coincide. The cubic root of 1261252124 is about 1080.4399567827.

Adding to 1261252124 its reverse (4212521621), we get a palindrome (5473773745).

The spelling of 1261252124 in words is "one billion, two hundred sixty-one million, two hundred fifty-two thousand, one hundred twenty-four".