124031431542121 has 16 divisors (see below), whose sum is σ = 128288222713728. Its totient is φ = 119834068988800.

The previous prime is 124031431542113. The next prime is 124031431542127. The reversal of 124031431542121 is 121245134130421.

It is a cyclic number.

It is not a de Polignac number, because 124031431542121 - 2³ = 124031431542113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124031431542127) 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, 7865931 + ... + 17604991.

It is an arithmetic number, because the mean of its divisors is an integer number (8018013919608).

Almost surely, 2^{124031431542121} is an apocalyptic number.

It is an amenable number.

124031431542121 is a deficient number, since it is larger than the sum of its proper divisors (4256791171607).

124031431542121 is a wasteful number, since it uses less digits than its factorization.

124031431542121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9742112.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 124031431542121 its reverse (121245134130421), we get a palindrome (245276565672542).

The spelling of 124031431542121 in words is "one hundred twenty-four trillion, thirty-one billion, four hundred thirty-one million, five hundred forty-two thousand, one hundred twenty-one".