120123035141520 has 40 divisors (see below), whose sum is σ = 372381408939456. Its totient is φ = 32032809371008.

The previous prime is 120123035141489. The next prime is 120123035141579. The reversal of 120123035141520 is 25141530321021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×120123035141520² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250256322972 + ... + 250256323451.

Almost surely, 2^{120123035141520} is an apocalyptic number.

120123035141520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120123035141520 is an abundant number, since it is smaller than the sum of its proper divisors (252258373797936).

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

120123035141520 is a wasteful number, since it uses less digits than its factorization.

120123035141520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500512646439 (or 500512646433 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 120123035141520 its reverse (25141530321021), we get a palindrome (145264565462541).

The spelling of 120123035141520 in words is "one hundred twenty trillion, one hundred twenty-three billion, thirty-five million, one hundred forty-one thousand, five hundred twenty".