523211642 has 16 divisors (see below), whose sum is σ = 791996832. Its totient is φ = 259218960.

The previous prime is 523211639. The next prime is 523211657. The reversal of 523211642 is 246112325.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260213 + ... + 262215.

It is an arithmetic number, because the mean of its divisors is an integer number (49499802).

Almost surely, 2^523211642 is an apocalyptic number.

523211642 is a deficient number, since it is larger than the sum of its proper divisors (268785190).

523211642 is a wasteful number, since it uses less digits than its factorization.

523211642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133.

The product of its digits is 2880, while the sum is 26.

The square root of 523211642 is about 22873.8200132816. The cubic root of 523211642 is about 805.7972847586.

Adding to 523211642 its reverse (246112325), we get a palindrome (769323967).

The spelling of 523211642 in words is "five hundred twenty-three million, two hundred eleven thousand, six hundred forty-two".