120003440 has 20 divisors (see below), whose sum is σ = 279008184. Its totient is φ = 48001344.

The previous prime is 120003439. The next prime is 120003451. The reversal of 120003440 is 44300021.

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

It is a super-2 number, since 2×120003440² = 28801651223667200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749942 + ... + 750101.

Almost surely, 2^120003440 is an apocalyptic number.

120003440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120003440 is an abundant number, since it is smaller than the sum of its proper divisors (159004744).

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

120003440 is a wasteful number, since it uses less digits than its factorization.

120003440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500056 (or 1500050 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 120003440 is about 10954.6081627779. The cubic root of 120003440 is about 493.2471280264.

Adding to 120003440 its reverse (44300021), we get a palindrome (164303461).

The spelling of 120003440 in words is "one hundred twenty million, three thousand, four hundred forty".