124561005 has 16 divisors (see below), whose sum is σ = 201700800. Its totient is φ = 65631488.

The previous prime is 124560991. The next prime is 124561027. The reversal of 124561005 is 500165421.

It is a cyclic number.

It is not a de Polignac number, because 124561005 - 2¹⁷ = 124429933 is a prime.

It is a super-2 number, since 2×124561005² = 31030887933220050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48780 + ... + 51269.

It is an arithmetic number, because the mean of its divisors is an integer number (12606300).

Almost surely, 2^124561005 is an apocalyptic number.

124561005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

124561005 is a deficient number, since it is larger than the sum of its proper divisors (77139795).

124561005 is a wasteful number, since it uses less digits than its factorization.

124561005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100140.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 124561005 is about 11160.6901668311. The cubic root of 124561005 is about 499.4139867787.

It can be divided in two parts, 1245 and 61005, that multiplied together give a square (75951225 = 8715²).

The spelling of 124561005 in words is "one hundred twenty-four million, five hundred sixty-one thousand, five".