626642542 has 16 divisors (see below), whose sum is σ = 996797232. Its totient is φ = 294433920.

The previous prime is 626642539. The next prime is 626642543. The reversal of 626642542 is 245246626.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626642543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8533 + ... + 36415.

It is an arithmetic number, because the mean of its divisors is an integer number (62299827).

Almost surely, 2^626642542 is an apocalyptic number.

626642542 is a deficient number, since it is larger than the sum of its proper divisors (370154690).

626642542 is a wasteful number, since it uses less digits than its factorization.

626642542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28563.

The product of its digits is 138240, while the sum is 37.

The square root of 626642542 is about 25032.8292847612. The cubic root of 626642542 is about 855.7363067802.

The spelling of 626642542 in words is "six hundred twenty-six million, six hundred forty-two thousand, five hundred forty-two".