120136331400 has 96 divisors (see below), whose sum is σ = 372855778560. Its totient is φ = 31999095040.

The previous prime is 120136331389. The next prime is 120136331407. The reversal of 120136331400 is 4133631021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (120136331407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401794 + ... + 633806.

It is an arithmetic number, because the mean of its divisors is an integer number (3883914360).

Almost surely, 2^120136331400 is an apocalyptic number.

120136331400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120136331400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186427889280).

120136331400 is an abundant number, since it is smaller than the sum of its proper divisors (252719447160).

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

120136331400 is a wasteful number, since it uses less digits than its factorization.

120136331400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232895 (or 232886 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 120136331400 its reverse (4133631021), we get a palindrome (124269962421).

The spelling of 120136331400 in words is "one hundred twenty billion, one hundred thirty-six million, three hundred thirty-one thousand, four hundred".