1200040016 has 20 divisors (see below), whose sum is σ = 2657231712. Its totient is φ = 514302816.

The previous prime is 1200040003. The next prime is 1200040031. The reversal of 1200040016 is 6100400021.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 5357210 + ... + 5357433.

Almost surely, 2^1200040016 is an apocalyptic number.

1200040016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1200040016 is an abundant number, since it is smaller than the sum of its proper divisors (1457191696).

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

1200040016 is a wasteful number, since it uses less digits than its factorization.

1200040016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10714658 (or 10714652 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1200040016 is about 34641.5937277718. The cubic root of 1200040016 is about 1062.6703810917.

Adding to 1200040016 its reverse (6100400021), we get a palindrome (7300440037).

The spelling of 1200040016 in words is "one billion, two hundred million, forty thousand, sixteen".