1400443120 has 20 divisors (see below), whose sum is σ = 3256030440. Its totient is φ = 560177216.

The previous prime is 1400443111. The next prime is 1400443183. The reversal of 1400443120 is 213440041.

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

It is a super-2 number, since 2×1400443120² = 3922481864710668800, 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, 8752690 + ... + 8752849.

It is an arithmetic number, because the mean of its divisors is an integer number (162801522).

Almost surely, 2^1400443120 is an apocalyptic number.

1400443120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400443120 is an abundant number, since it is smaller than the sum of its proper divisors (1855587320).

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

1400443120 is a wasteful number, since it uses less digits than its factorization.

1400443120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17505552 (or 17505546 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1400443120 is about 37422.4948393343. The cubic root of 1400443120 is about 1118.8069566417.

Adding to 1400443120 its reverse (213440041), we get a palindrome (1613883161).

The spelling of 1400443120 in words is "one billion, four hundred million, four hundred forty-three thousand, one hundred twenty".