123461527405 has 4 divisors (see below), whose sum is σ = 148153832892. Its totient is φ = 98769221920.

The previous prime is 123461527351. The next prime is 123461527433. The reversal of 123461527405 is 504725164321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504725164321 = 7 ⋅72103594903.

It can be written as a sum of positive squares in 2 ways, for example, as 71913003556 + 51548523849 = 268166^2 + 227043^2 .

It is not a de Polignac number, because 123461527405 - 2¹³ = 123461519213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12346152736 + ... + 12346152745.

It is an arithmetic number, because the mean of its divisors is an integer number (37038458223).

Almost surely, 2^123461527405 is an apocalyptic number.

It is an amenable number.

123461527405 is a deficient number, since it is larger than the sum of its proper divisors (24692305487).

123461527405 is an equidigital number, since it uses as much as digits as its factorization.

123461527405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24692305486.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 123461527405 in words is "one hundred twenty-three billion, four hundred sixty-one million, five hundred twenty-seven thousand, four hundred five".