144400120 has 16 divisors (see below), whose sum is σ = 324900360. Its totient is φ = 57760032.

The previous prime is 144400103. The next prime is 144400127. The reversal of 144400120 is 21004441.

It is a junction number, because it is equal to n+sod(n) for n = 144400094 and 144400103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144400127) 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, 1804962 + ... + 1805041.

Almost surely, 2^144400120 is an apocalyptic number.

144400120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144400120 is an abundant number, since it is smaller than the sum of its proper divisors (180500240).

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

144400120 is a wasteful number, since it uses less digits than its factorization.

144400120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610014 (or 3610010 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 144400120 is about 12016.6601017088. The cubic root of 144400120 is about 524.6332979694.

Adding to 144400120 its reverse (21004441), we get a palindrome (165404561).

The spelling of 144400120 in words is "one hundred forty-four million, four hundred thousand, one hundred twenty".