1642102004 has 24 divisors (see below), whose sum is σ = 2939826120. Its totient is φ = 802358784.

The previous prime is 1642102001. The next prime is 1642102009. The reversal of 1642102004 is 4002012461.

It can be written as a sum of positive squares in 4 ways, for example, as 984076900 + 658025104 = 31370^2 + 25652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642102001) 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, 6032 + ... + 57624.

It is an arithmetic number, because the mean of its divisors is an integer number (122492755).

Almost surely, 2^1642102004 is an apocalyptic number.

It is an amenable number.

1642102004 is a deficient number, since it is larger than the sum of its proper divisors (1297724116).

1642102004 is a wasteful number, since it uses less digits than its factorization.

1642102004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51779 (or 51777 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1642102004 is about 40522.8577965572. The cubic root of 1642102004 is about 1179.7773217653. Note that the first 3 decimals are identical.

Adding to 1642102004 its reverse (4002012461), we get a palindrome (5644114465).

The spelling of 1642102004 in words is "one billion, six hundred forty-two million, one hundred two thousand, four".