1642245201 has 24 divisors (see below), whose sum is σ = 2432803464. Its totient is φ = 1066890240.

The previous prime is 1642245197. The next prime is 1642245217. The reversal of 1642245201 is 1025422461.

It can be written as a sum of positive squares in 4 ways, for example, as 50625 + 1642194576 = 225^2 + 40524^2 .

It is not a de Polignac number, because 1642245201 - 2² = 1642245197 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1642245251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 402765 + ... + 406821.

It is an arithmetic number, because the mean of its divisors is an integer number (101366811).

Almost surely, 2^1642245201 is an apocalyptic number.

It is an amenable number.

1642245201 is a deficient number, since it is larger than the sum of its proper divisors (790558263).

1642245201 is a wasteful number, since it uses less digits than its factorization.

1642245201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201 (or 5198 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 1642245201 is about 40524.6246250351. The cubic root of 1642245201 is about 1179.8116143290.

Adding to 1642245201 its reverse (1025422461), we get a palindrome (2667667662).

The spelling of 1642245201 in words is "one billion, six hundred forty-two million, two hundred forty-five thousand, two hundred one".