641442102 has 32 divisors (see below), whose sum is σ = 1479866112. Its totient is φ = 181555104.

The previous prime is 641442059. The next prime is 641442103. The reversal of 641442102 is 201244146.

It is a happy number.

641442102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641442102² = 822895940436356808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641442103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66873 + ... + 75860.

It is an arithmetic number, because the mean of its divisors is an integer number (46245816).

Almost surely, 2^641442102 is an apocalyptic number.

641442102 is an abundant number, since it is smaller than the sum of its proper divisors (838424010).

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

641442102 is a wasteful number, since it uses less digits than its factorization.

641442102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142852.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 641442102 is about 25326.7072869728. The cubic root of 641442102 is about 862.4206643263.

Adding to 641442102 its reverse (201244146), we get a palindrome (842686248).

It can be divided in two parts, 6414 and 42102, that added together give a triangular number (48516 = T₃₁₁).

The spelling of 641442102 in words is "six hundred forty-one million, four hundred forty-two thousand, one hundred two".