632029421 has 4 divisors (see below), whose sum is σ = 634186812. Its totient is φ = 629872032.

The previous prime is 632029381. The next prime is 632029423. The reversal of 632029421 is 124920236.

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

It can be written as a sum of positive squares in 2 ways, for example, as 426422500 + 205606921 = 20650^2 + 14339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-632029421 is a prime.

It is a super-2 number, since 2×632029421² = 798922378019190482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632029423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078256 + ... + 1078841.

It is an arithmetic number, because the mean of its divisors is an integer number (158546703).

Almost surely, 2^632029421 is an apocalyptic number.

It is an amenable number.

632029421 is a deficient number, since it is larger than the sum of its proper divisors (2157391).

632029421 is a wasteful number, since it uses less digits than its factorization.

632029421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157390.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 632029421 is about 25140.1953254146. The cubic root of 632029421 is about 858.1814017404.

Adding to 632029421 its reverse (124920236), we get a palindrome (756949657).

The spelling of 632029421 in words is "six hundred thirty-two million, twenty-nine thousand, four hundred twenty-one".