124138291201 has 4 divisors (see below), whose sum is σ = 125838815812. Its totient is φ = 122437766592.

The previous prime is 124138291171. The next prime is 124138291219. The reversal of 124138291201 is 102192831421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46149350976 + 77988940225 = 214824^2 + 279265^2 .

It is a cyclic number.

It is not a de Polignac number, because 124138291201 - 2¹⁹ = 124137766913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124138291231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850262196 + ... + 850262341.

It is an arithmetic number, because the mean of its divisors is an integer number (31459703953).

It is a Proth number, since it is equal to 236775 ⋅ 2¹⁹ + 1 and 236775 < 2¹⁹.

Almost surely, 2^124138291201 is an apocalyptic number.

It is an amenable number.

124138291201 is a deficient number, since it is larger than the sum of its proper divisors (1700524611).

124138291201 is an equidigital number, since it uses as much as digits as its factorization.

124138291201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700524610.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 124138291201 in words is "one hundred twenty-four billion, one hundred thirty-eight million, two hundred ninety-one thousand, two hundred one".