1206642002 has 16 divisors (see below), whose sum is σ = 1865822040. Its totient is φ = 584823168.

The previous prime is 1206642001. The next prime is 1206642007. The reversal of 1206642002 is 2002466021.

It can be written as a sum of positive squares in 4 ways, for example, as 723125881 + 483516121 = 26891^2 + 21989^2 .

It is not an unprimeable number, because it can be changed into a prime (1206642001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10403 + ... + 50214.

Almost surely, 2^1206642002 is an apocalyptic number.

1206642002 is a deficient number, since it is larger than the sum of its proper divisors (659180038).

1206642002 is a wasteful number, since it uses less digits than its factorization.

1206642002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60925.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1206642002 is about 34736.7528994867. The cubic root of 1206642002 is about 1064.6155685970.

The spelling of 1206642002 in words is "one billion, two hundred six million, six hundred forty-two thousand, two".