124015355145040 has 20 divisors (see below), whose sum is σ = 288335700712404. Its totient is φ = 49606142057984.

The previous prime is 124015355145037. The next prime is 124015355145043. The reversal of 124015355145040 is 40541553510421.

It is an interprime number because it is at equal distance from previous prime (124015355145037) and next prime (124015355145043).

It can be written as a sum of positive squares in 2 ways, for example, as 19640035797264 + 104375319347776 = 4431708^2 + 10216424^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 124015355144984 and 124015355145002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124015355145043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775095969577 + ... + 775095969736.

Almost surely, 2^{124015355145040} is an apocalyptic number.

124015355145040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124015355145040 is an abundant number, since it is smaller than the sum of its proper divisors (164320345567364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124015355145040 is a wasteful number, since it uses less digits than its factorization.

124015355145040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550191939326 (or 1550191939320 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 124015355145040 in words is "one hundred twenty-four trillion, fifteen billion, three hundred fifty-five million, one hundred forty-five thousand, forty".