641242526 has 16 divisors (see below), whose sum is σ = 994775040. Its totient is φ = 309823800.

The previous prime is 641242487. The next prime is 641242541. The reversal of 641242526 is 625242146.

641242526 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 2×641242526² = 822383954301721352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641242492 and 641242501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35750 + ... + 50601.

It is an arithmetic number, because the mean of its divisors is an integer number (62173440).

Almost surely, 2^641242526 is an apocalyptic number.

641242526 is a deficient number, since it is larger than the sum of its proper divisors (353532514).

641242526 is a wasteful number, since it uses less digits than its factorization.

641242526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86479.

The product of its digits is 23040, while the sum is 32.

The square root of 641242526 is about 25322.7669499208. The cubic root of 641242526 is about 862.3312115553.

The spelling of 641242526 in words is "six hundred forty-one million, two hundred forty-two thousand, five hundred twenty-six".