1252103472144 has 160 divisors (see below), whose sum is σ = 4117236480000. Its totient is φ = 356889684096.

The previous prime is 1252103472143. The next prime is 1252103472161. The reversal of 1252103472144 is 4412743012521.

1252103472144 is a `hidden beast` number, since 1 + 25 + 21 + 0 + 3 + 472 + 144 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1252103472099 and 1252103472108.

It is not an unprimeable number, because it can be changed into a prime (1252103472143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 772957 + ... + 1761155.

It is an arithmetic number, because the mean of its divisors is an integer number (25732728000).

Almost surely, 2^{1252103472144} is an apocalyptic number.

1252103472144 is a gapful number since it is divisible by the number (14) 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 1252103472144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2058618240000).

1252103472144 is an abundant number, since it is smaller than the sum of its proper divisors (2865133007856).

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

1252103472144 is a wasteful number, since it uses less digits than its factorization.

1252103472144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988642 (or 988630 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

Adding to 1252103472144 its reverse (4412743012521), we get a palindrome (5664846484665).

The spelling of 1252103472144 in words is "one trillion, two hundred fifty-two billion, one hundred three million, four hundred seventy-two thousand, one hundred forty-four".