1001642236 has 24 divisors (see below), whose sum is σ = 2004076256. Its totient is φ = 429105600.

The previous prime is 1001642183. The next prime is 1001642237. The reversal of 1001642236 is 6322461001.

It is a self number, because there is not a number n which added to its sum of digits gives 1001642236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001642237) 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, 87010 + ... + 97846.

Almost surely, 2^1001642236 is an apocalyptic number.

It is an amenable number.

1001642236 is an abundant number, since it is smaller than the sum of its proper divisors (1002434020).

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

1001642236 is a wasteful number, since it uses less digits than its factorization.

1001642236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14149 (or 14147 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1001642236 is about 31648.7319809183. The cubic root of 1001642236 is about 1000.5471126132.

It can be divided in two parts, 100164 and 2236, that added together give a square (102400 = 320²).

The spelling of 1001642236 in words is "one billion, one million, six hundred forty-two thousand, two hundred thirty-six".