632540642 has 4 divisors (see below), whose sum is σ = 948810966. Its totient is φ = 316270320.

The previous prime is 632540627. The next prime is 632540677. The reversal of 632540642 is 246045236.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 508908481 + 123632161 = 22559^2 + 11119^2 .

It is a junction number, because it is equal to n+sod(n) for n = 632540599 and 632540608.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 158135159 + ... + 158135162.

Almost surely, 2^632540642 is an apocalyptic number.

632540642 is a deficient number, since it is larger than the sum of its proper divisors (316270324).

632540642 is a wasteful number, since it uses less digits than its factorization.

632540642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316270323.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 632540642 is about 25150.3606733581. The cubic root of 632540642 is about 858.4127212042.

Adding to 632540642 its reverse (246045236), we get a palindrome (878585878).

The spelling of 632540642 in words is "six hundred thirty-two million, five hundred forty thousand, six hundred forty-two".