1200672001 has 4 divisors (see below), whose sum is σ = 1200771504. Its totient is φ = 1200572500.

The previous prime is 1200671999. The next prime is 1200672019. The reversal of 1200672001 is 1002760021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1200672001 - 2¹ = 1200671999 is a prime.

It is a super-2 number, since 2×1200672001² = 2883226507970688002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200672001.

It is not an unprimeable number, because it can be changed into a prime (1200672041) 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, 28675 + ... + 56776.

It is an arithmetic number, because the mean of its divisors is an integer number (300192876).

Almost surely, 2^1200672001 is an apocalyptic number.

It is an amenable number.

1200672001 is a deficient number, since it is larger than the sum of its proper divisors (99503).

1200672001 is an equidigital number, since it uses as much as digits as its factorization.

1200672001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99502.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1200672001 is about 34650.7142927819. The cubic root of 1200672001 is about 1062.8568953944.

The spelling of 1200672001 in words is "one billion, two hundred million, six hundred seventy-two thousand, one".