123126261461 has 16 divisors (see below), whose sum is σ = 142038019200. Its totient is φ = 104545505088.

The previous prime is 123126261449. The next prime is 123126261493. The reversal of 123126261461 is 164162621321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123126261461 is a prime.

It is a super-2 number, since 2×123126261461² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123126261161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4053950 + ... + 4084208.

It is an arithmetic number, because the mean of its divisors is an integer number (8877376200).

Almost surely, 2^123126261461 is an apocalyptic number.

It is an amenable number.

123126261461 is a deficient number, since it is larger than the sum of its proper divisors (18911757739).

123126261461 is a wasteful number, since it uses less digits than its factorization.

123126261461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35708.

The product of its digits is 20736, while the sum is 35.

Adding to 123126261461 its reverse (164162621321), we get a palindrome (287288882782).

The spelling of 123126261461 in words is "one hundred twenty-three billion, one hundred twenty-six million, two hundred sixty-one thousand, four hundred sixty-one".